[Script Info]
Title: 
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:01.60,0:00:04.80,Default,,0000,0000,0000,,it says kilo newtons
Dialogue: 0,0:00:04.80,0:00:07.84,Default,,0000,0000,0000,,and after this video you will have much
Dialogue: 0,0:00:07.84,0:00:11.04,Default,,0000,0000,0000,,better understanding than probably 99
Dialogue: 0,0:00:11.04,0:00:13.36,Default,,0000,0000,0000,,of the rest of the climbers what these
Dialogue: 0,0:00:13.36,0:00:14.32,Default,,0000,0000,0000,,kilonewtons
Dialogue: 0,0:00:14.32,0:00:17.68,Default,,0000,0000,0000,,actually mean and what forces are
Dialogue: 0,0:00:17.68,0:00:20.32,Default,,0000,0000,0000,,involved in real climbing falls
Dialogue: 0,0:00:20.32,0:00:22.64,Default,,0000,0000,0000,,and then i will explain why big big
Dialogue: 0,0:00:22.64,0:00:23.60,Default,,0000,0000,0000,,whippers
Dialogue: 0,0:00:23.60,0:00:26.96,Default,,0000,0000,0000,,are often much softer than small falls
Dialogue: 0,0:00:26.96,0:00:30.16,Default,,0000,0000,0000,,but first let's find out what is force
Dialogue: 0,0:00:30.16,0:00:31.84,Default,,0000,0000,0000,,i like to play with my instagram
Dialogue: 0,0:00:31.84,0:00:34.48,Default,,0000,0000,0000,,followers so i decided to ask them
Dialogue: 0,0:00:34.48,0:00:37.20,Default,,0000,0000,0000,,what comes to their mind when we hear a
Dialogue: 0,0:00:37.20,0:00:37.92,Default,,0000,0000,0000,,word
Dialogue: 0,0:00:37.92,0:00:40.32,Default,,0000,0000,0000,,force half of the people said that it
Dialogue: 0,0:00:40.32,0:00:43.28,Default,,0000,0000,0000,,has something to do with star wars
Dialogue: 0,0:00:43.28,0:00:45.92,Default,,0000,0000,0000,,fair enough and then before you start
Dialogue: 0,0:00:45.92,0:00:46.96,Default,,0000,0000,0000,,thinking that
Dialogue: 0,0:00:46.96,0:00:49.28,Default,,0000,0000,0000,,half of my instagram followers are
Dialogue: 0,0:00:49.28,0:00:50.48,Default,,0000,0000,0000,,really smart
Dialogue: 0,0:00:50.48,0:00:52.40,Default,,0000,0000,0000,,i have to say that majority of them
Dialogue: 0,0:00:52.40,0:00:53.76,Default,,0000,0000,0000,,didn't vote it at all
Dialogue: 0,0:00:53.76,0:00:57.36,Default,,0000,0000,0000,,so i imagined something like what is
Dialogue: 0,0:00:57.36,0:00:58.17,Default,,0000,0000,0000,,force
Dialogue: 0,0:00:58.17,0:01:00.48,Default,,0000,0000,0000,,[Music]
Dialogue: 0,0:01:00.48,0:01:03.12,Default,,0000,0000,0000,,okay but those who wanted to sound smart
Dialogue: 0,0:01:03.12,0:01:04.00,Default,,0000,0000,0000,,said that
Dialogue: 0,0:01:04.00,0:01:07.20,Default,,0000,0000,0000,,force is mass times acceleration which
Dialogue: 0,0:01:07.20,0:01:09.12,Default,,0000,0000,0000,,is the formula that newton
Dialogue: 0,0:01:09.12,0:01:12.16,Default,,0000,0000,0000,,this guy came up with and that's why we
Dialogue: 0,0:01:12.16,0:01:12.64,Default,,0000,0000,0000,,measure
Dialogue: 0,0:01:12.64,0:01:15.28,Default,,0000,0000,0000,,force in newtons which to me is a little
Dialogue: 0,0:01:15.28,0:01:17.12,Default,,0000,0000,0000,,bit funny when you think about it
Dialogue: 0,0:01:17.12,0:01:19.11,Default,,0000,0000,0000,,imagine newton
Dialogue: 0,0:01:19.11,0:01:22.24,Default,,0000,0000,0000,,[Music]
Dialogue: 0,0:01:22.24,0:01:26.96,Default,,0000,0000,0000,,so we measure mass in kilograms
Dialogue: 0,0:01:26.96,0:01:30.88,Default,,0000,0000,0000,,and we measure acceleration
Dialogue: 0,0:01:30.88,0:01:35.20,Default,,0000,0000,0000,,in meters per second squared
Dialogue: 0,0:01:35.20,0:01:38.88,Default,,0000,0000,0000,,and we should measure force
Dialogue: 0,0:01:38.88,0:01:41.92,Default,,0000,0000,0000,,in newtons
Dialogue: 0,0:01:42.80,0:01:45.60,Default,,0000,0000,0000,,so to put this formula into perspective
Dialogue: 0,0:01:45.60,0:01:46.24,Default,,0000,0000,0000,,it's like
Dialogue: 0,0:01:46.24,0:01:49.68,Default,,0000,0000,0000,,one newton this guy is pushing
Dialogue: 0,0:01:49.68,0:01:52.72,Default,,0000,0000,0000,,one kilogram of mass and that
Dialogue: 0,0:01:52.72,0:01:55.84,Default,,0000,0000,0000,,makes that mass to accelerate by one
Dialogue: 0,0:01:55.84,0:01:57.52,Default,,0000,0000,0000,,meter per second
Dialogue: 0,0:01:57.52,0:02:01.36,Default,,0000,0000,0000,,every second so here i have a carabiner
Dialogue: 0,0:02:01.36,0:02:04.88,Default,,0000,0000,0000,,and if i put all my weight on it
Dialogue: 0,0:02:04.88,0:02:08.24,Default,,0000,0000,0000,,like so the question is what's the force
Dialogue: 0,0:02:08.24,0:02:10.00,Default,,0000,0000,0000,,right now into this carabiner
Dialogue: 0,0:02:10.00,0:02:12.88,Default,,0000,0000,0000,,so if we look back to the formula we can
Dialogue: 0,0:02:12.88,0:02:13.68,Default,,0000,0000,0000,,say that
Dialogue: 0,0:02:13.68,0:02:17.60,Default,,0000,0000,0000,,mass is my mass multiplied by
Dialogue: 0,0:02:17.60,0:02:20.56,Default,,0000,0000,0000,,acceleration what acceleration i'm
Dialogue: 0,0:02:20.56,0:02:22.32,Default,,0000,0000,0000,,hanging on a tree there is no
Dialogue: 0,0:02:22.32,0:02:25.36,Default,,0000,0000,0000,,movement no acceleration or
Dialogue: 0,0:02:25.36,0:02:28.96,Default,,0000,0000,0000,,is there an acceleration
Dialogue: 0,0:02:29.76,0:02:32.08,Default,,0000,0000,0000,,okay so you've probably seen this
Dialogue: 0,0:02:32.08,0:02:33.60,Default,,0000,0000,0000,,experiment before
Dialogue: 0,0:02:33.60,0:02:37.36,Default,,0000,0000,0000,,i have heavy object and a light object
Dialogue: 0,0:02:37.36,0:02:39.76,Default,,0000,0000,0000,,and the question is if i let go both of
Dialogue: 0,0:02:39.76,0:02:41.44,Default,,0000,0000,0000,,them at the same time
Dialogue: 0,0:02:41.44,0:02:43.36,Default,,0000,0000,0000,,which one is going to hit the ground
Dialogue: 0,0:02:43.36,0:02:45.04,Default,,0000,0000,0000,,first
Dialogue: 0,0:02:45.04,0:02:51.84,Default,,0000,0000,0000,,let's try
Dialogue: 0,0:02:53.48,0:02:55.76,Default,,0000,0000,0000,,[Music]
Dialogue: 0,0:02:55.76,0:02:58.80,Default,,0000,0000,0000,,so yes we fell at the same time because
Dialogue: 0,0:02:58.80,0:03:00.56,Default,,0000,0000,0000,,that's what gravity does it makes
Dialogue: 0,0:03:00.56,0:03:03.44,Default,,0000,0000,0000,,objects fall at exactly the same
Dialogue: 0,0:03:03.44,0:03:06.88,Default,,0000,0000,0000,,acceleration of 9.8 meters per second
Dialogue: 0,0:03:06.88,0:03:08.16,Default,,0000,0000,0000,,per second
Dialogue: 0,0:03:08.16,0:03:11.25,Default,,0000,0000,0000,,[Music]
Dialogue: 0,0:03:15.68,0:03:18.40,Default,,0000,0000,0000,,so when i'm hanging on this carabiner
Dialogue: 0,0:03:18.40,0:03:20.24,Default,,0000,0000,0000,,gravity is pulling me down
Dialogue: 0,0:03:20.24,0:03:23.20,Default,,0000,0000,0000,,but in order for me to not move down
Dialogue: 0,0:03:23.20,0:03:24.08,Default,,0000,0000,0000,,there must be
Dialogue: 0,0:03:24.08,0:03:26.72,Default,,0000,0000,0000,,opposite force which would be pulling me
Dialogue: 0,0:03:26.72,0:03:27.20,Default,,0000,0000,0000,,up
Dialogue: 0,0:03:27.20,0:03:30.64,Default,,0000,0000,0000,,here i have a spring while the gravity
Dialogue: 0,0:03:30.64,0:03:33.52,Default,,0000,0000,0000,,is pulling the rock down the spring is
Dialogue: 0,0:03:33.52,0:03:34.64,Default,,0000,0000,0000,,pulling the rock
Dialogue: 0,0:03:34.64,0:03:37.28,Default,,0000,0000,0000,,up so the carabiner is actually like a
Dialogue: 0,0:03:37.28,0:03:39.12,Default,,0000,0000,0000,,very very stiff spring
Dialogue: 0,0:03:39.12,0:03:42.08,Default,,0000,0000,0000,,which is pulling me up the molecules of
Dialogue: 0,0:03:42.08,0:03:44.16,Default,,0000,0000,0000,,the carabiner when i'm hanging on it
Dialogue: 0,0:03:44.16,0:03:46.80,Default,,0000,0000,0000,,are being spread apart but they like to
Dialogue: 0,0:03:46.80,0:03:48.56,Default,,0000,0000,0000,,stay together so we kind of
Dialogue: 0,0:03:48.56,0:03:51.60,Default,,0000,0000,0000,,pull back you can't see this expansion
Dialogue: 0,0:03:51.60,0:03:54.08,Default,,0000,0000,0000,,of the quick draw on low forces
Dialogue: 0,0:03:54.08,0:04:01.84,Default,,0000,0000,0000,,but you can on big ones
Dialogue: 0,0:04:02.08,0:04:04.80,Default,,0000,0000,0000,,and so it turns out that this carabiner
Dialogue: 0,0:04:04.80,0:04:05.92,Default,,0000,0000,0000,,has to accelerate
Dialogue: 0,0:04:05.92,0:04:11.04,Default,,0000,0000,0000,,my weight up at the same 9.8 meters per
Dialogue: 0,0:04:11.04,0:04:11.60,Default,,0000,0000,0000,,second
Dialogue: 0,0:04:11.60,0:04:14.88,Default,,0000,0000,0000,,squared which turns out to be about 600
Dialogue: 0,0:04:14.88,0:04:16.16,Default,,0000,0000,0000,,newtons
Dialogue: 0,0:04:16.16,0:04:19.60,Default,,0000,0000,0000,,yep 600 of these need to
Dialogue: 0,0:04:19.60,0:04:23.84,Default,,0000,0000,0000,,hold one skinny guy like me
Dialogue: 0,0:04:26.84,0:04:28.64,Default,,0000,0000,0000,,[ __ ]
Dialogue: 0,0:04:28.64,0:04:32.08,Default,,0000,0000,0000,,okay moving on this quick draw says
Dialogue: 0,0:04:32.08,0:04:37.36,Default,,0000,0000,0000,,that it can hold up to 26 kilonewtons
Dialogue: 0,0:04:37.36,0:04:39.84,Default,,0000,0000,0000,,kilonewton is basically a thousand
Dialogue: 0,0:04:39.84,0:04:40.96,Default,,0000,0000,0000,,newtons
Dialogue: 0,0:04:40.96,0:04:44.24,Default,,0000,0000,0000,,so it means that it could hold about
Dialogue: 0,0:04:44.24,0:04:48.00,Default,,0000,0000,0000,,40 me i wish i would have a clone
Dialogue: 0,0:04:48.00,0:04:49.20,Default,,0000,0000,0000,,machine so i could
Dialogue: 0,0:04:49.20,0:04:52.32,Default,,0000,0000,0000,,demonstrate this to you
Dialogue: 0,0:04:52.32,0:04:55.76,Default,,0000,0000,0000,,and then imagine how many videos all of
Dialogue: 0,0:04:55.76,0:04:56.32,Default,,0000,0000,0000,,this
Dialogue: 0,0:04:56.32,0:04:57.85,Default,,0000,0000,0000,,me could create
Dialogue: 0,0:04:57.85,0:05:01.04,Default,,0000,0000,0000,,[Music]
Dialogue: 0,0:05:01.04,0:05:04.16,Default,,0000,0000,0000,,so if you want to see us create more
Dialogue: 0,0:05:04.16,0:05:05.76,Default,,0000,0000,0000,,videos like this
Dialogue: 0,0:05:05.76,0:05:09.04,Default,,0000,0000,0000,,click the join button it really helps
Dialogue: 0,0:05:09.04,0:05:11.52,Default,,0000,0000,0000,,and i promise i will spend every single
Dialogue: 0,0:05:11.52,0:05:13.36,Default,,0000,0000,0000,,penny i get from you guys
Dialogue: 0,0:05:13.36,0:05:17.20,Default,,0000,0000,0000,,on buying a clone machine
Dialogue: 0,0:05:18.48,0:05:22.08,Default,,0000,0000,0000,,okay so you can hang 40 me
Dialogue: 0,0:05:22.08,0:05:25.36,Default,,0000,0000,0000,,on one single carabiner that's pretty
Dialogue: 0,0:05:25.36,0:05:26.48,Default,,0000,0000,0000,,impressive
Dialogue: 0,0:05:26.48,0:05:28.80,Default,,0000,0000,0000,,although there are things that you must
Dialogue: 0,0:05:28.80,0:05:30.40,Default,,0000,0000,0000,,know first of all
Dialogue: 0,0:05:30.40,0:05:32.88,Default,,0000,0000,0000,,all of these ratings are for new
Dialogue: 0,0:05:32.88,0:05:34.00,Default,,0000,0000,0000,,equipment
Dialogue: 0,0:05:34.00,0:05:36.24,Default,,0000,0000,0000,,wear and tear does not go into that
Dialogue: 0,0:05:36.24,0:05:37.44,Default,,0000,0000,0000,,rating
Dialogue: 0,0:05:37.44,0:05:40.80,Default,,0000,0000,0000,,how bad is that well i asked my friend
Dialogue: 0,0:05:40.80,0:05:43.36,Default,,0000,0000,0000,,ryan from youtube channel how not to
Dialogue: 0,0:05:43.36,0:05:45.68,Default,,0000,0000,0000,,highline because he has a hobby
Dialogue: 0,0:05:45.68,0:05:49.20,Default,,0000,0000,0000,,of breaking stuff and according to his
Dialogue: 0,0:05:49.20,0:05:52.40,Default,,0000,0000,0000,,tests most of the metals tend to last
Dialogue: 0,0:05:52.40,0:05:53.36,Default,,0000,0000,0000,,pretty well
Dialogue: 0,0:05:53.36,0:05:56.64,Default,,0000,0000,0000,,although with soft things things are
Dialogue: 0,0:05:56.64,0:05:59.76,Default,,0000,0000,0000,,totally different black diamond sling
Dialogue: 0,0:05:59.76,0:06:00.48,Default,,0000,0000,0000,,with a
Dialogue: 0,0:06:00.48,0:06:07.84,Default,,0000,0000,0000,,22 kilonewton mbs
Dialogue: 0,0:06:08.88,0:06:11.84,Default,,0000,0000,0000,,what what was the mbs on is 22
Dialogue: 0,0:06:11.84,0:06:13.20,Default,,0000,0000,0000,,kilonewtons yeah
Dialogue: 0,0:06:13.20,0:06:17.28,Default,,0000,0000,0000,,yep a sling rated at 22 kilonewtons
Dialogue: 0,0:06:17.28,0:06:22.08,Default,,0000,0000,0000,,broke at six and here's another one
Dialogue: 0,0:06:22.08,0:06:27.52,Default,,0000,0000,0000,,that's a great condition would not whip
Dialogue: 0,0:06:27.52,0:06:32.84,Default,,0000,0000,0000,,no not whip i would tie my dog to this
Dialogue: 0,0:06:32.84,0:06:35.84,Default,,0000,0000,0000,,though
Dialogue: 0,0:06:36.88,0:06:39.20,Default,,0000,0000,0000,,all right i wouldn't tie a very big dog
Dialogue: 0,0:06:39.20,0:06:40.80,Default,,0000,0000,0000,,to that
Dialogue: 0,0:06:40.80,0:06:44.64,Default,,0000,0000,0000,,hold on let's see how big of a dog could
Dialogue: 0,0:06:44.64,0:06:45.68,Default,,0000,0000,0000,,you have tied
Dialogue: 0,0:06:45.68,0:06:48.88,Default,,0000,0000,0000,,with this oh uh
Dialogue: 0,0:06:48.88,0:06:52.80,Default,,0000,0000,0000,,chihuahua yeah so if you're one of these
Dialogue: 0,0:06:52.80,0:06:54.56,Default,,0000,0000,0000,,people who like to save money
Dialogue: 0,0:06:54.56,0:06:58.08,Default,,0000,0000,0000,,and use very old worn down slings
Dialogue: 0,0:06:58.08,0:07:03.84,Default,,0000,0000,0000,,good luck 24 kilonewtons
Dialogue: 0,0:07:04.24,0:07:06.24,Default,,0000,0000,0000,,that did not stretch that much oh i
Dialogue: 0,0:07:06.24,0:07:07.44,Default,,0000,0000,0000,,guess
Dialogue: 0,0:07:07.44,0:07:10.80,Default,,0000,0000,0000,,guess four kilonewtons
Dialogue: 0,0:07:10.80,0:07:13.92,Default,,0000,0000,0000,,what z [ __ ] man 4
Dialogue: 0,0:07:13.92,0:07:16.96,Default,,0000,0000,0000,,000 newtons okay how much does
Dialogue: 0,0:07:16.96,0:07:20.08,Default,,0000,0000,0000,,such sling can hold well that's pretty
Dialogue: 0,0:07:20.08,0:07:22.88,Default,,0000,0000,0000,,easy just divide 4 000 newtons by
Dialogue: 0,0:07:22.88,0:07:26.64,Default,,0000,0000,0000,,9.8 or if you want easier by 10
Dialogue: 0,0:07:26.64,0:07:29.68,Default,,0000,0000,0000,,and you get 400 kilograms
Dialogue: 0,0:07:29.68,0:07:33.92,Default,,0000,0000,0000,,that sounds quite a lot no 400 kilograms
Dialogue: 0,0:07:33.92,0:07:37.52,Default,,0000,0000,0000,,well all of these conversions from
Dialogue: 0,0:07:37.52,0:07:39.60,Default,,0000,0000,0000,,force to kilograms that i have been
Dialogue: 0,0:07:39.60,0:07:41.20,Default,,0000,0000,0000,,talking so far
Dialogue: 0,0:07:41.20,0:07:43.84,Default,,0000,0000,0000,,are based on the fact that the weight is
Dialogue: 0,0:07:43.84,0:07:45.60,Default,,0000,0000,0000,,hanging statically
Dialogue: 0,0:07:45.60,0:07:48.40,Default,,0000,0000,0000,,once the thing starts falling everything
Dialogue: 0,0:07:48.40,0:07:50.88,Default,,0000,0000,0000,,changes
Dialogue: 0,0:07:53.68,0:07:55.44,Default,,0000,0000,0000,,so what you have just seen is a clip
Dialogue: 0,0:07:55.44,0:07:56.72,Default,,0000,0000,0000,,from dmm
Dialogue: 0,0:07:56.72,0:07:59.76,Default,,0000,0000,0000,,where they dropped 80 kilograms of mass
Dialogue: 0,0:07:59.76,0:08:03.36,Default,,0000,0000,0000,,and that broke a brand new dyneema sling
Dialogue: 0,0:08:03.36,0:08:06.00,Default,,0000,0000,0000,,now my goal is not to scare you it's the
Dialogue: 0,0:08:06.00,0:08:08.24,Default,,0000,0000,0000,,opposite i want to bring the awareness
Dialogue: 0,0:08:08.24,0:08:09.68,Default,,0000,0000,0000,,that climbing gear is
Dialogue: 0,0:08:09.68,0:08:12.80,Default,,0000,0000,0000,,not magic and if you use it incorrectly
Dialogue: 0,0:08:12.80,0:08:16.00,Default,,0000,0000,0000,,it might fail
Dialogue: 0,0:08:16.56,0:08:18.72,Default,,0000,0000,0000,,fun fact do you know this joke that
Dialogue: 0,0:08:18.72,0:08:20.72,Default,,0000,0000,0000,,climbers like to say when they fail on
Dialogue: 0,0:08:20.72,0:08:21.68,Default,,0000,0000,0000,,their climbs
Dialogue: 0,0:08:21.68,0:08:24.80,Default,,0000,0000,0000,,but today is a high gravity day
Dialogue: 0,0:08:24.80,0:08:27.92,Default,,0000,0000,0000,,well turns out that's true gravity does
Dialogue: 0,0:08:27.92,0:08:30.08,Default,,0000,0000,0000,,change from month to month
Dialogue: 0,0:08:30.08,0:08:32.64,Default,,0000,0000,0000,,so if you are one of those people who
Dialogue: 0,0:08:32.64,0:08:34.24,Default,,0000,0000,0000,,like to complain that
Dialogue: 0,0:08:34.24,0:08:36.16,Default,,0000,0000,0000,,today is a bad humidity or bad
Dialogue: 0,0:08:36.16,0:08:38.08,Default,,0000,0000,0000,,temperature now you have a right to
Dialogue: 0,0:08:38.08,0:08:40.88,Default,,0000,0000,0000,,complain that today is a bad gravity day
Dialogue: 0,0:08:40.88,0:08:44.08,Default,,0000,0000,0000,,yay okay let's see what happens when
Dialogue: 0,0:08:44.08,0:08:47.12,Default,,0000,0000,0000,,objects like us climbers start
Dialogue: 0,0:08:47.12,0:08:49.60,Default,,0000,0000,0000,,falling
Dialogue: 0,0:08:50.96,0:08:54.00,Default,,0000,0000,0000,,that was a 10 meters fall
Dialogue: 0,0:08:54.00,0:08:56.16,Default,,0000,0000,0000,,let's see how much force such fall would
Dialogue: 0,0:08:56.16,0:08:57.92,Default,,0000,0000,0000,,generate to the climber
Dialogue: 0,0:08:57.92,0:09:00.24,Default,,0000,0000,0000,,the formula for that would be similar to
Dialogue: 0,0:09:00.24,0:09:01.68,Default,,0000,0000,0000,,what we had before
Dialogue: 0,0:09:01.68,0:09:04.32,Default,,0000,0000,0000,,except that we need to multiply this by
Dialogue: 0,0:09:04.32,0:09:06.08,Default,,0000,0000,0000,,the distance the climber was
Dialogue: 0,0:09:06.08,0:09:09.04,Default,,0000,0000,0000,,falling and divide by the distance the
Dialogue: 0,0:09:09.04,0:09:10.48,Default,,0000,0000,0000,,climber was slowing
Dialogue: 0,0:09:10.48,0:09:12.72,Default,,0000,0000,0000,,down
Dialogue: 0,0:09:16.72,0:09:19.20,Default,,0000,0000,0000,,and did you actually notice how soft the
Dialogue: 0,0:09:19.20,0:09:23.12,Default,,0000,0000,0000,,fall for the climber was
Dialogue: 0,0:09:23.12,0:09:26.32,Default,,0000,0000,0000,,so imagine driving a car in the highway
Dialogue: 0,0:09:26.32,0:09:29.36,Default,,0000,0000,0000,,and pressing on the brake gently
Dialogue: 0,0:09:29.36,0:09:32.16,Default,,0000,0000,0000,,while you come to a stop no problems
Dialogue: 0,0:09:32.16,0:09:32.96,Default,,0000,0000,0000,,right
Dialogue: 0,0:09:32.96,0:09:34.96,Default,,0000,0000,0000,,now imagine you're not driving so fast
Dialogue: 0,0:09:34.96,0:09:36.00,Default,,0000,0000,0000,,you're in a city you're
Dialogue: 0,0:09:36.00,0:09:40.08,Default,,0000,0000,0000,,driving slowly but you slam on a brick
Dialogue: 0,0:09:40.08,0:09:43.28,Default,,0000,0000,0000,,that would not feel very nice right
Dialogue: 0,0:09:43.28,0:09:45.12,Default,,0000,0000,0000,,so here is the first thing i want you to
Dialogue: 0,0:09:45.12,0:09:47.04,Default,,0000,0000,0000,,remember out of this video
Dialogue: 0,0:09:47.04,0:09:49.84,Default,,0000,0000,0000,,the impact to the climber will always be
Dialogue: 0,0:09:49.84,0:09:52.16,Default,,0000,0000,0000,,the product of the distance the climber
Dialogue: 0,0:09:52.16,0:09:53.28,Default,,0000,0000,0000,,was falling
Dialogue: 0,0:09:53.28,0:09:56.08,Default,,0000,0000,0000,,divided by the distance of the slowdown
Dialogue: 0,0:09:56.08,0:09:57.28,Default,,0000,0000,0000,,phase
Dialogue: 0,0:09:57.28,0:10:00.00,Default,,0000,0000,0000,,so let's calculate the falling distance
Dialogue: 0,0:10:00.00,0:10:00.88,Default,,0000,0000,0000,,was about
Dialogue: 0,0:10:00.88,0:10:03.60,Default,,0000,0000,0000,,four quick draws and the slow down
Dialogue: 0,0:10:03.60,0:10:04.16,Default,,0000,0000,0000,,distance
Dialogue: 0,0:10:04.16,0:10:06.64,Default,,0000,0000,0000,,was about two and a half quickdraws and
Dialogue: 0,0:10:06.64,0:10:09.36,Default,,0000,0000,0000,,we get about 860 newtons
Dialogue: 0,0:10:09.36,0:10:11.44,Default,,0000,0000,0000,,or if we would replace her with a
Dialogue: 0,0:10:11.44,0:10:13.92,Default,,0000,0000,0000,,standard 80 kilogram climber
Dialogue: 0,0:10:13.92,0:10:17.12,Default,,0000,0000,0000,,that would be about 1.3
Dialogue: 0,0:10:17.12,0:10:20.32,Default,,0000,0000,0000,,kilonewtons which is not much although
Dialogue: 0,0:10:20.32,0:10:22.32,Default,,0000,0000,0000,,this formula has a little problem
Dialogue: 0,0:10:22.32,0:10:24.00,Default,,0000,0000,0000,,because it will always give you
Dialogue: 0,0:10:24.00,0:10:26.56,Default,,0000,0000,0000,,the value which is slightly lower than
Dialogue: 0,0:10:26.56,0:10:27.44,Default,,0000,0000,0000,,it would be in
Dialogue: 0,0:10:27.44,0:10:30.08,Default,,0000,0000,0000,,real life but showing you how to
Dialogue: 0,0:10:30.08,0:10:32.64,Default,,0000,0000,0000,,calculate more precisely would mean that
Dialogue: 0,0:10:32.64,0:10:34.32,Default,,0000,0000,0000,,most of you would probably just leave
Dialogue: 0,0:10:34.32,0:10:35.84,Default,,0000,0000,0000,,this video right here
Dialogue: 0,0:10:35.84,0:10:38.32,Default,,0000,0000,0000,,but we don't need to do that because we
Dialogue: 0,0:10:38.32,0:10:40.00,Default,,0000,0000,0000,,can rely on real life
Dialogue: 0,0:10:40.00,0:10:42.96,Default,,0000,0000,0000,,experimental data and who is the boss at
Dialogue: 0,0:10:42.96,0:10:45.04,Default,,0000,0000,0000,,providing such data for us
Dialogue: 0,0:10:45.04,0:10:47.44,Default,,0000,0000,0000,,hi i'm ryan jinx and and that's enough
Dialogue: 0,0:10:47.44,0:10:49.12,Default,,0000,0000,0000,,advertisement for you
Dialogue: 0,0:10:49.12,0:10:51.28,Default,,0000,0000,0000,,what we did in this video they put a
Dialogue: 0,0:10:51.28,0:10:53.52,Default,,0000,0000,0000,,device measuring the force on the
Dialogue: 0,0:10:53.52,0:10:54.32,Default,,0000,0000,0000,,climber
Dialogue: 0,0:10:54.32,0:11:01.84,Default,,0000,0000,0000,,and made a series of falls
Dialogue: 0,0:11:07.74,0:11:11.34,Default,,0000,0000,0000,,[Music]
Dialogue: 0,0:11:12.64,0:11:15.84,Default,,0000,0000,0000,,that puts me in 1.87
Dialogue: 0,0:11:15.84,0:11:18.08,Default,,0000,0000,0000,,so most of the falls that in my opinion
Dialogue: 0,0:11:18.08,0:11:20.24,Default,,0000,0000,0000,,would be a good delaying example
Dialogue: 0,0:11:20.24,0:11:23.20,Default,,0000,0000,0000,,where below 2 kilonewtons now let's take
Dialogue: 0,0:11:23.20,0:11:24.40,Default,,0000,0000,0000,,a look at these two
Dialogue: 0,0:11:24.40,0:11:27.68,Default,,0000,0000,0000,,extreme examples climber on the left is
Dialogue: 0,0:11:27.68,0:11:29.44,Default,,0000,0000,0000,,5 meters above the bolt
Dialogue: 0,0:11:29.44,0:11:32.64,Default,,0000,0000,0000,,so that would be 10 meters full plus the
Dialogue: 0,0:11:32.64,0:11:33.92,Default,,0000,0000,0000,,slack in the system
Dialogue: 0,0:11:33.92,0:11:36.24,Default,,0000,0000,0000,,the belayer probably has about one meter
Dialogue: 0,0:11:36.24,0:11:36.96,Default,,0000,0000,0000,,of slack
Dialogue: 0,0:11:36.96,0:11:38.80,Default,,0000,0000,0000,,and then there is probably one more
Dialogue: 0,0:11:38.80,0:11:40.08,Default,,0000,0000,0000,,meter of slack
Dialogue: 0,0:11:40.08,0:11:42.24,Default,,0000,0000,0000,,in between the quick draws so in total
Dialogue: 0,0:11:42.24,0:11:43.12,Default,,0000,0000,0000,,we are looking at
Dialogue: 0,0:11:43.12,0:11:45.92,Default,,0000,0000,0000,,12 meters fall while climber on the
Dialogue: 0,0:11:45.92,0:11:48.40,Default,,0000,0000,0000,,right is only one meter above the bolt
Dialogue: 0,0:11:48.40,0:11:50.56,Default,,0000,0000,0000,,and let's say that the belayer is really
Dialogue: 0,0:11:50.56,0:11:52.80,Default,,0000,0000,0000,,afraid and he's going to give a very
Dialogue: 0,0:11:52.80,0:11:54.56,Default,,0000,0000,0000,,hard catch for the climber
Dialogue: 0,0:11:54.56,0:11:58.00,Default,,0000,0000,0000,,so we are looking at 2 meters fall
Dialogue: 0,0:11:58.00,0:12:01.84,Default,,0000,0000,0000,,so a massive 12 meters fall or a small
Dialogue: 0,0:12:01.84,0:12:04.16,Default,,0000,0000,0000,,2 meters fall which one do you think is
Dialogue: 0,0:12:04.16,0:12:06.32,Default,,0000,0000,0000,,gonna be softer for the climber
Dialogue: 0,0:12:06.32,0:12:08.40,Default,,0000,0000,0000,,well let's see we know how much the
Dialogue: 0,0:12:08.40,0:12:10.80,Default,,0000,0000,0000,,climbers will fall but now we need to
Dialogue: 0,0:12:10.80,0:12:11.68,Default,,0000,0000,0000,,find out the
Dialogue: 0,0:12:11.68,0:12:13.92,Default,,0000,0000,0000,,slow down distances for both of the
Dialogue: 0,0:12:13.92,0:12:14.80,Default,,0000,0000,0000,,cases
Dialogue: 0,0:12:14.80,0:12:17.44,Default,,0000,0000,0000,,and that depends mainly on two things
Dialogue: 0,0:12:17.44,0:12:18.16,Default,,0000,0000,0000,,first
Dialogue: 0,0:12:18.16,0:12:20.72,Default,,0000,0000,0000,,is the displacement of the belayer on a
Dialogue: 0,0:12:20.72,0:12:21.84,Default,,0000,0000,0000,,big big whipper
Dialogue: 0,0:12:21.84,0:12:24.64,Default,,0000,0000,0000,,the belayer will probably fly about 2
Dialogue: 0,0:12:24.64,0:12:26.00,Default,,0000,0000,0000,,meters
Dialogue: 0,0:12:26.00,0:12:28.16,Default,,0000,0000,0000,,while on a small fall let's assume very
Dialogue: 0,0:12:28.16,0:12:30.00,Default,,0000,0000,0000,,common mistake for beginners
Dialogue: 0,0:12:30.00,0:12:32.08,Default,,0000,0000,0000,,where the belayer just takes the slack
Dialogue: 0,0:12:32.08,0:12:34.32,Default,,0000,0000,0000,,out and delays very hard
Dialogue: 0,0:12:34.32,0:12:37.04,Default,,0000,0000,0000,,and the second factor is the stretch of
Dialogue: 0,0:12:37.04,0:12:38.08,Default,,0000,0000,0000,,the rope
Dialogue: 0,0:12:38.08,0:12:40.40,Default,,0000,0000,0000,,rope manufacturers claim that if you put
Dialogue: 0,0:12:40.40,0:12:41.44,Default,,0000,0000,0000,,80 kilogram
Dialogue: 0,0:12:41.44,0:12:44.64,Default,,0000,0000,0000,,mass on a dynamic rope statically
Dialogue: 0,0:12:44.64,0:12:47.52,Default,,0000,0000,0000,,like so without movement the rope will
Dialogue: 0,0:12:47.52,0:12:48.16,Default,,0000,0000,0000,,stretch
Dialogue: 0,0:12:48.16,0:12:50.72,Default,,0000,0000,0000,,10 percent and dynamic stretch when you
Dialogue: 0,0:12:50.72,0:12:52.56,Default,,0000,0000,0000,,take elite fall
Dialogue: 0,0:12:52.56,0:12:55.68,Default,,0000,0000,0000,,is up to 30 percent well
Dialogue: 0,0:12:55.68,0:12:58.24,Default,,0000,0000,0000,,up to 30 percent is not very helpful for
Dialogue: 0,0:12:58.24,0:12:59.84,Default,,0000,0000,0000,,us what we need to know
Dialogue: 0,0:12:59.84,0:13:02.72,Default,,0000,0000,0000,,is the stretch of this rope from two to
Dialogue: 0,0:13:02.72,0:13:05.12,Default,,0000,0000,0000,,four kilonewtons force that's where the
Dialogue: 0,0:13:05.12,0:13:06.64,Default,,0000,0000,0000,,lead falls are
Dialogue: 0,0:13:06.64,0:13:09.36,Default,,0000,0000,0000,,and yet again i was texting ryan so i'm
Dialogue: 0,0:13:09.36,0:13:10.16,Default,,0000,0000,0000,,gonna pull
Dialogue: 0,0:13:10.16,0:13:12.16,Default,,0000,0000,0000,,some dynamic rope to see how much it
Dialogue: 0,0:13:12.16,0:13:13.84,Default,,0000,0000,0000,,stretches at first we thought it's gonna
Dialogue: 0,0:13:13.84,0:13:16.24,Default,,0000,0000,0000,,be very easy just go to the park stretch
Dialogue: 0,0:13:16.24,0:13:17.92,Default,,0000,0000,0000,,the rope to different forces
Dialogue: 0,0:13:17.92,0:13:21.04,Default,,0000,0000,0000,,and measure the elongation of the rope
Dialogue: 0,0:13:21.04,0:13:24.16,Default,,0000,0000,0000,,well sometimes easy is
Dialogue: 0,0:13:24.16,0:13:26.48,Default,,0000,0000,0000,,hard when you stretch the rope to
Dialogue: 0,0:13:26.48,0:13:28.88,Default,,0000,0000,0000,,certain force and leave it there
Dialogue: 0,0:13:28.88,0:13:30.72,Default,,0000,0000,0000,,the force will start dropping on the
Dialogue: 0,0:13:30.72,0:13:32.56,Default,,0000,0000,0000,,rope the rope kind of just
Dialogue: 0,0:13:32.56,0:13:34.96,Default,,0000,0000,0000,,gives up while this is very interesting
Dialogue: 0,0:13:34.96,0:13:36.80,Default,,0000,0000,0000,,it's not critical for us
Dialogue: 0,0:13:36.80,0:13:38.72,Default,,0000,0000,0000,,the only thing he needed to do is to
Dialogue: 0,0:13:38.72,0:13:40.88,Default,,0000,0000,0000,,pull the rope as fast as he can to
Dialogue: 0,0:13:40.88,0:13:42.32,Default,,0000,0000,0000,,desired force
Dialogue: 0,0:13:42.32,0:13:45.92,Default,,0000,0000,0000,,and measure the stretch okay
Dialogue: 0,0:13:45.92,0:13:49.64,Default,,0000,0000,0000,,oh my god that's the seven mark
Dialogue: 0,0:13:49.64,0:13:52.88,Default,,0000,0000,0000,,6.9 meters
Dialogue: 0,0:13:52.88,0:13:56.08,Default,,0000,0000,0000,,it stretches when you pull it a dynamic
Dialogue: 0,0:13:56.08,0:13:57.52,Default,,0000,0000,0000,,rope
Dialogue: 0,0:13:57.52,0:13:59.92,Default,,0000,0000,0000,,to four kilonewtons but then there is
Dialogue: 0,0:13:59.92,0:14:01.36,Default,,0000,0000,0000,,another interesting factor
Dialogue: 0,0:14:01.36,0:14:04.32,Default,,0000,0000,0000,,once you load the rope to high forces it
Dialogue: 0,0:14:04.32,0:14:04.80,Default,,0000,0000,0000,,takes
Dialogue: 0,0:14:04.80,0:14:06.80,Default,,0000,0000,0000,,some time for the rope to get back to
Dialogue: 0,0:14:06.80,0:14:08.40,Default,,0000,0000,0000,,its original length
Dialogue: 0,0:14:08.40,0:14:11.52,Default,,0000,0000,0000,,this is what's known as rope resting and
Dialogue: 0,0:14:11.52,0:14:13.60,Default,,0000,0000,0000,,it was really cool to see this in action
Dialogue: 0,0:14:13.60,0:14:15.76,Default,,0000,0000,0000,,see the graveyard getting pulled back
Dialogue: 0,0:14:15.76,0:14:18.64,Default,,0000,0000,0000,,slowly
Dialogue: 0,0:14:19.52,0:14:22.56,Default,,0000,0000,0000,,super interesting probably way more
Dialogue: 0,0:14:22.56,0:14:23.20,Default,,0000,0000,0000,,interesting
Dialogue: 0,0:14:23.20,0:14:25.44,Default,,0000,0000,0000,,to me than it is to you right now so
Dialogue: 0,0:14:25.44,0:14:27.44,Default,,0000,0000,0000,,after he spent like four hours in the
Dialogue: 0,0:14:27.44,0:14:28.96,Default,,0000,0000,0000,,park pulling the ropes
Dialogue: 0,0:14:28.96,0:14:32.00,Default,,0000,0000,0000,,the results were that on forces from two
Dialogue: 0,0:14:32.00,0:14:33.76,Default,,0000,0000,0000,,to four kilonewtons
Dialogue: 0,0:14:33.76,0:14:37.68,Default,,0000,0000,0000,,the rope stretched to about 20 percent
Dialogue: 0,0:14:37.68,0:14:39.92,Default,,0000,0000,0000,,great so let's use that in our
Dialogue: 0,0:14:39.92,0:14:41.04,Default,,0000,0000,0000,,calculations
Dialogue: 0,0:14:41.04,0:14:44.24,Default,,0000,0000,0000,,on a big fall we have 27 meters of rope
Dialogue: 0,0:14:44.24,0:14:45.12,Default,,0000,0000,0000,,in total
Dialogue: 0,0:14:45.12,0:14:49.44,Default,,0000,0000,0000,,so that would be 5.4 meters of stretch
Dialogue: 0,0:14:49.44,0:14:51.84,Default,,0000,0000,0000,,while in a small fall we have 5 meters
Dialogue: 0,0:14:51.84,0:14:52.48,Default,,0000,0000,0000,,of rope
Dialogue: 0,0:14:52.48,0:14:54.96,Default,,0000,0000,0000,,and that would be 1 meter of stretch
Dialogue: 0,0:14:54.96,0:14:57.28,Default,,0000,0000,0000,,however our belayer is panicking and
Dialogue: 0,0:14:57.28,0:14:58.48,Default,,0000,0000,0000,,taking heart
Dialogue: 0,0:14:58.48,0:15:01.12,Default,,0000,0000,0000,,so he will take half of that stretch for
Dialogue: 0,0:15:01.12,0:15:02.08,Default,,0000,0000,0000,,himself
Dialogue: 0,0:15:02.08,0:15:04.64,Default,,0000,0000,0000,,leaving only half a meter of stretch for
Dialogue: 0,0:15:04.64,0:15:06.48,Default,,0000,0000,0000,,the climber
Dialogue: 0,0:15:06.48,0:15:09.60,Default,,0000,0000,0000,,and tadam the big big whipper
Dialogue: 0,0:15:09.60,0:15:12.96,Default,,0000,0000,0000,,will be two and a half times softer for
Dialogue: 0,0:15:12.96,0:15:16.32,Default,,0000,0000,0000,,the climber than a small fall
Dialogue: 0,0:15:16.32,0:15:19.04,Default,,0000,0000,0000,,oh i love fun facts here's another one
Dialogue: 0,0:15:19.04,0:15:20.48,Default,,0000,0000,0000,,imagine that you were climbing
Dialogue: 0,0:15:20.48,0:15:23.84,Default,,0000,0000,0000,,and failed but humidity was good
Dialogue: 0,0:15:23.84,0:15:26.32,Default,,0000,0000,0000,,temperature was good even the gravity
Dialogue: 0,0:15:26.32,0:15:28.24,Default,,0000,0000,0000,,was good that day
Dialogue: 0,0:15:28.24,0:15:32.00,Default,,0000,0000,0000,,you can still blame the moon negligibly
Dialogue: 0,0:15:32.00,0:15:35.20,Default,,0000,0000,0000,,but truly you weigh about a millionth of
Dialogue: 0,0:15:35.20,0:15:35.84,Default,,0000,0000,0000,,your weight
Dialogue: 0,0:15:35.84,0:15:38.64,Default,,0000,0000,0000,,less when the moon is directly above you
Dialogue: 0,0:15:38.64,0:15:40.00,Default,,0000,0000,0000,,so if you want to send
Dialogue: 0,0:15:40.00,0:15:42.56,Default,,0000,0000,0000,,climb when the moon is directly above
Dialogue: 0,0:15:42.56,0:15:43.84,Default,,0000,0000,0000,,you
Dialogue: 0,0:15:43.84,0:15:46.24,Default,,0000,0000,0000,,you're welcome i remember i was
Dialogue: 0,0:15:46.24,0:15:48.56,Default,,0000,0000,0000,,projecting this really long route of
Dialogue: 0,0:15:48.56,0:15:51.36,Default,,0000,0000,0000,,35 meters and the first time i managed
Dialogue: 0,0:15:51.36,0:15:53.92,Default,,0000,0000,0000,,to link all the cruxes and arrive at the
Dialogue: 0,0:15:53.92,0:15:54.80,Default,,0000,0000,0000,,anchor
Dialogue: 0,0:15:54.80,0:15:57.04,Default,,0000,0000,0000,,the moment when i was pulling the rope
Dialogue: 0,0:15:57.04,0:15:58.56,Default,,0000,0000,0000,,up to clip the anchor
Dialogue: 0,0:15:58.56,0:16:00.88,Default,,0000,0000,0000,,my belayer couldn't see me very well so
Dialogue: 0,0:16:00.88,0:16:03.20,Default,,0000,0000,0000,,he just gave me a lot of slack
Dialogue: 0,0:16:03.20,0:16:06.08,Default,,0000,0000,0000,,and on top of that the bolt before the
Dialogue: 0,0:16:06.08,0:16:06.88,Default,,0000,0000,0000,,anchor
Dialogue: 0,0:16:06.88,0:16:10.16,Default,,0000,0000,0000,,was really far really ran out
Dialogue: 0,0:16:10.16,0:16:12.96,Default,,0000,0000,0000,,so while i was dragging the rope up i
Dialogue: 0,0:16:12.96,0:16:14.24,Default,,0000,0000,0000,,lost my balance
Dialogue: 0,0:16:14.24,0:16:16.80,Default,,0000,0000,0000,,and took a fall the wall is flying in
Dialogue: 0,0:16:16.80,0:16:18.64,Default,,0000,0000,0000,,front of me and i'm thinking why i'm
Dialogue: 0,0:16:18.64,0:16:19.04,Default,,0000,0000,0000,,still
Dialogue: 0,0:16:19.04,0:16:22.56,Default,,0000,0000,0000,,falling this is unusual when i stopped
Dialogue: 0,0:16:22.56,0:16:24.80,Default,,0000,0000,0000,,and looked up it was maybe five or six
Dialogue: 0,0:16:24.80,0:16:26.88,Default,,0000,0000,0000,,quick draws above me probably about
Dialogue: 0,0:16:26.88,0:16:30.24,Default,,0000,0000,0000,,15 meters of fall but
Dialogue: 0,0:16:30.24,0:16:33.20,Default,,0000,0000,0000,,the fall was super soft it's like riding
Dialogue: 0,0:16:33.20,0:16:33.52,Default,,0000,0000,0000,,an
Dialogue: 0,0:16:33.52,0:16:35.76,Default,,0000,0000,0000,,elevator so here is another takeaway out
Dialogue: 0,0:16:35.76,0:16:36.72,Default,,0000,0000,0000,,of this video
Dialogue: 0,0:16:36.72,0:16:39.44,Default,,0000,0000,0000,,if the climber is really high up he has
Dialogue: 0,0:16:39.44,0:16:41.68,Default,,0000,0000,0000,,a lot of rope to absorb the fall
Dialogue: 0,0:16:41.68,0:16:43.92,Default,,0000,0000,0000,,so as long as he doesn't fall onto
Dialogue: 0,0:16:43.92,0:16:44.80,Default,,0000,0000,0000,,something
Dialogue: 0,0:16:44.80,0:16:47.76,Default,,0000,0000,0000,,the fall will be soft no matter how you
Dialogue: 0,0:16:47.76,0:16:49.20,Default,,0000,0000,0000,,blade that
Dialogue: 0,0:16:49.20,0:16:52.08,Default,,0000,0000,0000,,however if the climber is not so high he
Dialogue: 0,0:16:52.08,0:16:54.08,Default,,0000,0000,0000,,doesn't have so much rope to absorb the
Dialogue: 0,0:16:54.08,0:16:54.72,Default,,0000,0000,0000,,fall
Dialogue: 0,0:16:54.72,0:16:57.92,Default,,0000,0000,0000,,then soft dynamic bling is really
Dialogue: 0,0:16:57.92,0:17:01.44,Default,,0000,0000,0000,,important and you can ask any light
Dialogue: 0,0:17:01.44,0:17:04.24,Default,,0000,0000,0000,,climber how many times we had their
Dialogue: 0,0:17:04.24,0:17:04.96,Default,,0000,0000,0000,,ankles
Dialogue: 0,0:17:04.96,0:17:08.08,Default,,0000,0000,0000,,broken due to hard catches okay let's
Dialogue: 0,0:17:08.08,0:17:09.68,Default,,0000,0000,0000,,switch gears a little bit let's talk
Dialogue: 0,0:17:09.68,0:17:10.24,Default,,0000,0000,0000,,about
Dialogue: 0,0:17:10.24,0:17:12.64,Default,,0000,0000,0000,,friction because the more friction you
Dialogue: 0,0:17:12.64,0:17:13.44,Default,,0000,0000,0000,,have
Dialogue: 0,0:17:13.44,0:17:16.40,Default,,0000,0000,0000,,the harder the fall for the climber will
Dialogue: 0,0:17:16.40,0:17:16.88,Default,,0000,0000,0000,,be
Dialogue: 0,0:17:16.88,0:17:19.44,Default,,0000,0000,0000,,and here is very extreme example of that
Dialogue: 0,0:17:19.44,0:17:21.20,Default,,0000,0000,0000,,as you can see right here
Dialogue: 0,0:17:21.20,0:17:24.32,Default,,0000,0000,0000,,we z dragged it and so we're gonna have
Dialogue: 0,0:17:24.32,0:17:26.32,Default,,0000,0000,0000,,a lot of friction
Dialogue: 0,0:17:26.32,0:17:33.84,Default,,0000,0000,0000,,when i fall for science
Dialogue: 0,0:17:34.08,0:17:36.40,Default,,0000,0000,0000,,so when you have a lot of friction the
Dialogue: 0,0:17:36.40,0:17:38.16,Default,,0000,0000,0000,,rope close to the climber
Dialogue: 0,0:17:38.16,0:17:40.96,Default,,0000,0000,0000,,stretches normally but the rope closer
Dialogue: 0,0:17:40.96,0:17:42.08,Default,,0000,0000,0000,,to belayer
Dialogue: 0,0:17:42.08,0:17:44.40,Default,,0000,0000,0000,,doesn't stretch that much it's like
Dialogue: 0,0:17:44.40,0:17:46.72,Default,,0000,0000,0000,,having shorter rope and heavier belayer
Dialogue: 0,0:17:46.72,0:17:47.68,Default,,0000,0000,0000,,at the same time
Dialogue: 0,0:17:47.68,0:17:50.16,Default,,0000,0000,0000,,and although the force to the harness
Dialogue: 0,0:17:50.16,0:17:52.40,Default,,0000,0000,0000,,was only two and a half kilonewtons
Dialogue: 0,0:17:52.40,0:17:54.88,Default,,0000,0000,0000,,a lot of the force went pendulum into
Dialogue: 0,0:17:54.88,0:17:57.20,Default,,0000,0000,0000,,the wall
Dialogue: 0,0:17:57.20,0:17:59.92,Default,,0000,0000,0000,,and that's how we break ankles so
Dialogue: 0,0:17:59.92,0:18:02.48,Default,,0000,0000,0000,,extending the quickdraws not only helps
Dialogue: 0,0:18:02.48,0:18:06.80,Default,,0000,0000,0000,,you to clip and avoid situations like
Dialogue: 0,0:18:12.84,0:18:15.84,Default,,0000,0000,0000,,this
Dialogue: 0,0:18:16.48,0:18:19.28,Default,,0000,0000,0000,,but also reduces the impact forces for
Dialogue: 0,0:18:19.28,0:18:20.56,Default,,0000,0000,0000,,the climbers
Dialogue: 0,0:18:20.56,0:18:23.84,Default,,0000,0000,0000,,ok let's circle back to dmm test
Dialogue: 0,0:18:23.84,0:18:26.64,Default,,0000,0000,0000,,breaking the sling the nema slings are
Dialogue: 0,0:18:26.64,0:18:28.80,Default,,0000,0000,0000,,very static they don't stretch
Dialogue: 0,0:18:28.80,0:18:30.88,Default,,0000,0000,0000,,at all and i hope that by now you
Dialogue: 0,0:18:30.88,0:18:32.88,Default,,0000,0000,0000,,understand that this sudden stop can
Dialogue: 0,0:18:32.88,0:18:33.44,Default,,0000,0000,0000,,create a
Dialogue: 0,0:18:33.44,0:18:36.96,Default,,0000,0000,0000,,huge forces if not ask somebody to slap
Dialogue: 0,0:18:36.96,0:18:37.52,Default,,0000,0000,0000,,you
Dialogue: 0,0:18:37.52,0:18:40.48,Default,,0000,0000,0000,,this stop on the face will be basically
Dialogue: 0,0:18:40.48,0:18:42.32,Default,,0000,0000,0000,,what you need to understand so
Dialogue: 0,0:18:42.32,0:18:44.72,Default,,0000,0000,0000,,let's make a very wild and probably very
Dialogue: 0,0:18:44.72,0:18:46.08,Default,,0000,0000,0000,,inaccurate guess
Dialogue: 0,0:18:46.08,0:18:49.44,Default,,0000,0000,0000,,but this sling would stretch to about 5
Dialogue: 0,0:18:49.44,0:18:53.28,Default,,0000,0000,0000,,centimeters so if we drop 80 kilograms
Dialogue: 0,0:18:53.28,0:18:54.48,Default,,0000,0000,0000,,of mass
Dialogue: 0,0:18:54.48,0:18:57.92,Default,,0000,0000,0000,,the distance of 120 centimeters
Dialogue: 0,0:18:57.92,0:19:00.64,Default,,0000,0000,0000,,and the absorption distance is only 5
Dialogue: 0,0:19:00.64,0:19:01.84,Default,,0000,0000,0000,,centimeters
Dialogue: 0,0:19:01.84,0:19:06.08,Default,,0000,0000,0000,,we are looking at 19 kilo newtons
Dialogue: 0,0:19:06.08,0:19:08.72,Default,,0000,0000,0000,,if that is not gonna break the sling
Dialogue: 0,0:19:08.72,0:19:10.64,Default,,0000,0000,0000,,it's definitely gonna break
Dialogue: 0,0:19:10.64,0:19:14.24,Default,,0000,0000,0000,,you whoa if you're still watching that
Dialogue: 0,0:19:14.24,0:19:16.00,Default,,0000,0000,0000,,probably means that you should be
Dialogue: 0,0:19:16.00,0:19:19.20,Default,,0000,0000,0000,,at least a little bit geeky so here is a
Dialogue: 0,0:19:19.20,0:19:21.20,Default,,0000,0000,0000,,dessert for you
Dialogue: 0,0:19:21.20,0:19:24.40,Default,,0000,0000,0000,,there is no gravity yeah
Dialogue: 0,0:19:24.40,0:19:27.20,Default,,0000,0000,0000,,objects don't attract each other there
Dialogue: 0,0:19:27.20,0:19:27.44,Default,,0000,0000,0000,,is
Dialogue: 0,0:19:27.44,0:19:29.60,Default,,0000,0000,0000,,only space time you feel as though
Dialogue: 0,0:19:29.60,0:19:30.56,Default,,0000,0000,0000,,you're being pushed
Dialogue: 0,0:19:30.56,0:19:32.80,Default,,0000,0000,0000,,into the ground not because of a force
Dialogue: 0,0:19:32.80,0:19:34.00,Default,,0000,0000,0000,,called gravity
Dialogue: 0,0:19:34.00,0:19:36.48,Default,,0000,0000,0000,,but because time is moving faster for
Dialogue: 0,0:19:36.48,0:19:37.44,Default,,0000,0000,0000,,your head
Dialogue: 0,0:19:37.44,0:19:39.92,Default,,0000,0000,0000,,than for your feet this and all the
Dialogue: 0,0:19:39.92,0:19:41.76,Default,,0000,0000,0000,,other resources that i use to create
Dialogue: 0,0:19:41.76,0:19:42.56,Default,,0000,0000,0000,,this video
Dialogue: 0,0:19:42.56,0:19:45.04,Default,,0000,0000,0000,,will be in the description and now
Dialogue: 0,0:19:45.04,0:19:45.76,Default,,0000,0000,0000,,please go
Dialogue: 0,0:19:45.76,0:19:48.24,Default,,0000,0000,0000,,send some love to ryan for providing me
Dialogue: 0,0:19:48.24,0:19:50.64,Default,,0000,0000,0000,,with all of his experimental data that i
Dialogue: 0,0:19:50.64,0:19:52.24,Default,,0000,0000,0000,,used in this video
Dialogue: 0,0:19:52.24,0:19:54.56,Default,,0000,0000,0000,,so don't forget to subscribe and support
Dialogue: 0,0:19:54.56,0:19:56.56,Default,,0000,0000,0000,,our channels if you want to see more
Dialogue: 0,0:19:56.56,0:19:57.92,Default,,0000,0000,0000,,content like this
Dialogue: 0,0:19:57.92,0:20:01.60,Default,,0000,0000,0000,,click join