[Script Info]
Title: 
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:01.61,0:00:03.94,Default,,0000,0000,0000,,Aqui diz kilonewtons
Dialogue: 0,0:00:04.83,0:00:06.70,Default,,0000,0000,0000,,Depois deste vídeo,
Dialogue: 0,0:00:06.70,0:00:09.24,Default,,0000,0000,0000,,você saberá mais do que
Dialogue: 0,0:00:09.24,0:00:12.94,Default,,0000,0000,0000,,provavelmente 99% dos escaladores
Dialogue: 0,0:00:12.94,0:00:16.01,Default,,0000,0000,0000,,sobre o que estes kilonewtons \Nrealmente significam,
Dialogue: 0,0:00:16.01,0:00:20.42,Default,,0000,0000,0000,,e quais forças estão envolvidas\Nem quedas reais.
Dialogue: 0,0:00:20.42,0:00:23.71,Default,,0000,0000,0000,,Vou explicar por que\Nques muito, muito grandes
Dialogue: 0,0:00:23.71,0:00:27.14,Default,,0000,0000,0000,,são frequentemente mais suaves\Nque quedas pequenas
Dialogue: 0,0:00:27.14,0:00:30.28,Default,,0000,0000,0000,,Mas primeiro, vamos descobrir o que é força.
Dialogue: 0,0:00:30.28,0:00:32.61,Default,,0000,0000,0000,,Eu gosto de brincar com\Nmeus seguidores do Instagram,
Dialogue: 0,0:00:32.61,0:00:36.31,Default,,0000,0000,0000,,então pedi para eles responderem\No que vem à cabeça
Dialogue: 0,0:00:36.31,0:00:38.71,Default,,0000,0000,0000,,quando eles ouvem a palavra 'força'.
Dialogue: 0,0:00:38.71,0:00:40.04,Default,,0000,0000,0000,,Metade das pessoas disse
Dialogue: 0,0:00:40.04,0:00:43.44,Default,,0000,0000,0000,,que é algo a ver com\N"Star Wars".
Dialogue: 0,0:00:43.44,0:00:44.59,Default,,0000,0000,0000,,Justo.
Dialogue: 0,0:00:44.59,0:00:46.48,Default,,0000,0000,0000,,E antes que você possa\Ncomeçar a pensar
Dialogue: 0,0:00:46.48,0:00:50.64,Default,,0000,0000,0000,,que metade dos meus \Nseguidores são realmente espertos,
Dialogue: 0,0:00:50.64,0:00:53.87,Default,,0000,0000,0000,,Tenho que dizer que a maioria\Nnem sequer votou.
Dialogue: 0,0:00:53.87,0:00:55.41,Default,,0000,0000,0000,,Então imagine algo assim...
Dialogue: 0,0:00:55.41,0:00:57.88,Default,,0000,0000,0000,,O que é força?
Dialogue: 0,0:00:57.88,0:01:00.60,Default,,0000,0000,0000,,(música animada)\N(sons eletronicos)
Dialogue: 0,0:01:00.60,0:01:03.06,Default,,0000,0000,0000,,Ok, mas os que quiseram\Nsoar inteligentes
Dialogue: 0,0:01:03.06,0:01:07.15,Default,,0000,0000,0000,,Disseram que força é\Nmassa vezes aceleração
Dialogue: 0,0:01:07.15,0:01:09.86,Default,,0000,0000,0000,,que é formula que Newton,\Neste cara aqui,
Dialogue: 0,0:01:09.86,0:01:10.92,Default,,0000,0000,0000,,chegou.
Dialogue: 0,0:01:10.92,0:01:11.82,Default,,0000,0000,0000,,- [Newton] 'Ooh yaa'
Dialogue: 0,0:01:11.82,0:01:14.40,Default,,0000,0000,0000,,E é por isto que medimos\Nforça em Newtons
Dialogue: 0,0:01:14.40,0:01:17.21,Default,,0000,0000,0000,,O que pra mim é meio \Nengraçado pensar,
Dialogue: 0,0:01:17.21,0:01:18.55,Default,,0000,0000,0000,,Imagine Newton.
Dialogue: 0,0:01:18.55,0:01:21.13,Default,,0000,0000,0000,,(Musica suave)
Dialogue: 0,0:01:22.23,0:01:24.99,Default,,0000,0000,0000,,Então nos medimos\Nmassa em kilogramas,
Dialogue: 0,0:01:27.56,0:01:32.56,Default,,0000,0000,0000,,e medimos aceleração \Nem metros por segundo ao quadrado.
Dialogue: 0,0:01:35.48,0:01:40.06,Default,,0000,0000,0000,,Então devemos medir força em \NNewtons.
Dialogue: 0,0:01:40.06,0:01:42.96,Default,,0000,0000,0000,,(palmas)
Dialogue: 0,0:01:42.96,0:01:45.43,Default,,0000,0000,0000,,Então para por esta fórmula\Nem perspectiva,
Dialogue: 0,0:01:45.43,0:01:48.99,Default,,0000,0000,0000,,É assim, um Newton,\Neste cara,
Dialogue: 0,0:01:48.99,0:01:52.25,Default,,0000,0000,0000,,está empurrando\Num kilograma de massa
Dialogue: 0,0:01:52.25,0:01:55.33,Default,,0000,0000,0000,,e isto faz esta massa acelerar
Dialogue: 0,0:01:55.33,0:01:58.87,Default,,0000,0000,0000,,a um metro por segundo, a cada segundo.
Dialogue: 0,0:01:58.87,0:02:01.56,Default,,0000,0000,0000,,Aqui temos um mosquetão.
Dialogue: 0,0:02:01.56,0:02:06.47,Default,,0000,0000,0000,,Se eu colocar todo \Nmeu peso sobre ele, assim,
Dialogue: 0,0:02:06.47,0:02:08.84,Default,,0000,0000,0000,,a pergunta é, qual é a \Nforça neste exato momento
Dialogue: 0,0:02:08.84,0:02:10.11,Default,,0000,0000,0000,,sobre o mosquetão ?
Dialogue: 0,0:02:10.11,0:02:12.47,Default,,0000,0000,0000,,Se olharmos novamente para a fórmula,
Dialogue: 0,0:02:12.47,0:02:15.92,Default,,0000,0000,0000,,podemos dizer que a massa\Né a minha massa
Dialogue: 0,0:02:15.92,0:02:18.54,Default,,0000,0000,0000,,multiplicada pela aceleração.
Dialogue: 0,0:02:19.35,0:02:21.30,Default,,0000,0000,0000,,Que aceleração?\NEu to pendurado na árvore.
Dialogue: 0,0:02:21.30,0:02:24.04,Default,,0000,0000,0000,,Não há movimento,\Nnão há aceleração.
Dialogue: 0,0:02:24.94,0:02:28.18,Default,,0000,0000,0000,,ou há aceleração ?
Dialogue: 0,0:02:28.18,0:02:29.88,Default,,0000,0000,0000,,(música animada)
Dialogue: 0,0:02:29.88,0:02:33.79,Default,,0000,0000,0000,,Veja, você provavelmente\Njá viu este experimento antes,
Dialogue: 0,0:02:33.79,0:02:37.50,Default,,0000,0000,0000,,Eu tenho um objeto pesado\Ne um objeto leve.
Dialogue: 0,0:02:37.50,0:02:39.41,Default,,0000,0000,0000,,E a pergunta é, se eu os deixar cair
Dialogue: 0,0:02:39.41,0:02:41.64,Default,,0000,0000,0000,,ao mesmo tempo
Dialogue: 0,0:02:41.64,0:02:43.94,Default,,0000,0000,0000,,qual atingirá o solo primeiro ?
Dialogue: 0,0:02:45.22,0:02:46.05,Default,,0000,0000,0000,,Vamos tentar.
Dialogue: 0,0:02:55.91,0:02:58.56,Default,,0000,0000,0000,,Sim, eles chegam ao mesmo tempo
Dialogue: 0,0:02:58.56,0:03:00.27,Default,,0000,0000,0000,,Por que é isto que a gravidade faz,
Dialogue: 0,0:03:00.27,0:03:04.37,Default,,0000,0000,0000,,Ela faz os objetos cairem com\Nexatamente a mesma aceleração
Dialogue: 0,0:03:04.37,0:03:08.80,Default,,0000,0000,0000,,de 9.8 metros por segundo por segundo
Dialogue: 0,0:03:15.79,0:03:18.51,Default,,0000,0000,0000,,Então eu estou pendurado no mosquetão,
Dialogue: 0,0:03:18.51,0:03:20.39,Default,,0000,0000,0000,,a gravidade está me puxando para baixo;
Dialogue: 0,0:03:20.39,0:03:23.29,Default,,0000,0000,0000,,Mas para que eu possa\Nnão me mover para baixo,
Dialogue: 0,0:03:23.29,0:03:27.27,Default,,0000,0000,0000,,tem que haver uma força oposta,\Nme puxando para cima.
Dialogue: 0,0:03:27.27,0:03:29.49,Default,,0000,0000,0000,,Aqui eu tenho uma mola.
Dialogue: 0,0:03:29.49,0:03:32.67,Default,,0000,0000,0000,,Enquanto a gravidade está\Npuxando a pedra para baixo,
Dialogue: 0,0:03:32.67,0:03:35.37,Default,,0000,0000,0000,,a mola está puxando\Na pedra para cima
Dialogue: 0,0:03:35.37,0:03:39.23,Default,,0000,0000,0000,,O mosquetão então é na verdade\Numa mola muito muito rígida
Dialogue: 0,0:03:39.23,0:03:41.15,Default,,0000,0000,0000,,que está me puxando para cima.
Dialogue: 0,0:03:41.15,0:03:44.27,Default,,0000,0000,0000,,As moléculas do mosquetão,\Nquando estou pendurado nele,
Dialogue: 0,0:03:44.27,0:03:46.05,Default,,0000,0000,0000,,estão sendo separadas,
Dialogue: 0,0:03:46.05,0:03:49.85,Default,,0000,0000,0000,,mas elas querem ficar juntas,\Nentão elas fazem uma força oposta.
Dialogue: 0,0:03:49.85,0:03:52.52,Default,,0000,0000,0000,,Você não pode ver esta expansão\Ndo mosquetão
Dialogue: 0,0:03:52.52,0:03:56.12,Default,,0000,0000,0000,,com forças baixas,\Nmas pode com forças grandes.
Dialogue: 0,0:04:02.21,0:04:04.87,Default,,0000,0000,0000,,Acontece então que este mosquetão
Dialogue: 0,0:04:04.87,0:04:08.08,Default,,0000,0000,0000,,tem que acelerar o meu peso para cima
Dialogue: 0,0:04:08.08,0:04:12.68,Default,,0000,0000,0000,,aos mesmos 9.8 metros \Npor segundo ao quadrado
Dialogue: 0,0:04:12.68,0:04:16.29,Default,,0000,0000,0000,,O que é aproximadamente 600 Newtons
Dialogue: 0,0:04:16.29,0:04:21.29,Default,,0000,0000,0000,,Sim, 600 destes são necessários para\Nsegurar um magrelo como eu.
Dialogue: 0,0:04:28.80,0:04:32.21,Default,,0000,0000,0000,,Ok, continuando, o mosquetão diz
Dialogue: 0,0:04:32.21,0:04:37.21,Default,,0000,0000,0000,,que ele pode segurar 26 kilonewtons.
Dialogue: 0,0:04:37.57,0:04:41.00,Default,,0000,0000,0000,,Kilonewton é basicamente\Nmil Newtons
Dialogue: 0,0:04:41.00,0:04:45.48,Default,,0000,0000,0000,,Então significa que\Npoderia segurar 40 eus
Dialogue: 0,0:04:46.65,0:04:48.61,Default,,0000,0000,0000,,Queria ter uma máquina de clonagem
Dialogue: 0,0:04:48.61,0:04:50.76,Default,,0000,0000,0000,,para demonstrar isto para vocês.
Dialogue: 0,0:04:52.52,0:04:57.52,Default,,0000,0000,0000,,Imaginine quantos videos\Nestes 'eus' poderiam criar.
Dialogue: 0,0:04:57.96,0:05:01.04,Default,,0000,0000,0000,,(música)
Dialogue: 0,0:05:01.04,0:05:05.87,Default,,0000,0000,0000,,Então se você quiser nos ver\Ncriando mais videos como este,
Dialogue: 0,0:05:05.87,0:05:09.15,Default,,0000,0000,0000,,clique no 'join', realmente ajuda.
Dialogue: 0,0:05:09.15,0:05:12.05,Default,,0000,0000,0000,,Eu prometo que vou gastar\Ncada centavo
Dialogue: 0,0:05:12.05,0:05:15.70,Default,,0000,0000,0000,,que eu ganhar de vocês\Ncomprando uma máquina de clonagem.
Dialogue: 0,0:05:15.70,0:05:17.35,Default,,0000,0000,0000,,Aproveite!
Dialogue: 0,0:05:17.35,0:05:22.18,Default,,0000,0000,0000,,Ok, então você pode pendurar 40 eus
Dialogue: 0,0:05:22.18,0:05:26.57,Default,,0000,0000,0000,,em um úinco mosquetão,\Nbem impressionante.
Dialogue: 0,0:05:26.57,0:05:29.52,Default,,0000,0000,0000,,No entanto há algumas coisas que\Nvocê precisa saber.
Dialogue: 0,0:05:29.52,0:05:31.95,Default,,0000,0000,0000,,Primeiramente, todas estas\Nespecificações
Dialogue: 0,0:05:31.95,0:05:33.98,Default,,0000,0000,0000,,são para equipamentos novos,
Dialogue: 0,0:05:33.98,0:05:37.51,Default,,0000,0000,0000,,desgaste não entra na especificação.
Dialogue: 0,0:05:37.51,0:05:39.19,Default,,0000,0000,0000,,Quão ruim é isso ?
Dialogue: 0,0:05:39.19,0:05:42.69,Default,,0000,0000,0000,,Bem, eu perguntei ao meu amigo\NRyan do canal de YouTube,
Dialogue: 0,0:05:42.69,0:05:45.77,Default,,0000,0000,0000,,HowNOTtoHighline por que ele tem um hobby
Dialogue: 0,0:05:45.77,0:05:47.87,Default,,0000,0000,0000,,de quebrar coisas.
Dialogue: 0,0:05:47.87,0:05:50.20,Default,,0000,0000,0000,,E de acordo com os testes dele,
Dialogue: 0,0:05:50.20,0:05:53.49,Default,,0000,0000,0000,,a maioria dos metais tende\Na durar bastante.
Dialogue: 0,0:05:53.49,0:05:58.49,Default,,0000,0000,0000,,Mas com tecidos\Na coisa é bem diferente.
Dialogue: 0,0:05:58.74,0:06:02.03,Default,,0000,0000,0000,,- [Ryan] Fita da Black Diamond com\N22 kilonewtons MBS
Dialogue: 0,0:06:03.09,0:06:04.31,Default,,0000,0000,0000,,(som de máquina)
Dialogue: 0,0:06:04.31,0:06:07.06,Default,,0000,0000,0000,,(estalo metálico)
Dialogue: 0,0:06:09.07,0:06:12.77,Default,,0000,0000,0000,,O que ? Era o MBS de 22 kilonewtons?
Dialogue: 0,0:06:12.77,0:06:13.60,Default,,0000,0000,0000,,- [Homem] Sim.
Dialogue: 0,0:06:13.60,0:06:18.30,Default,,0000,0000,0000,,- É, a fita de 22 kilonewtons\Nquebrou com 6.
Dialogue: 0,0:06:19.49,0:06:20.67,Default,,0000,0000,0000,,E aqui vai outra.
Dialogue: 0,0:06:20.67,0:06:24.97,Default,,0000,0000,0000,,- [Ryan] Woo, ótima condição.
Dialogue: 0,0:06:24.97,0:06:26.19,Default,,0000,0000,0000,,- [Homem] Não tomaria queda nela.
Dialogue: 0,0:06:27.58,0:06:28.72,Default,,0000,0000,0000,,- [Ryan] Não, não caia.
Dialogue: 0,0:06:30.27,0:06:32.00,Default,,0000,0000,0000,,Eu amarraria meu cachorro com ela.
Dialogue: 0,0:06:32.00,0:06:34.67,Default,,0000,0000,0000,,(barulho de máquina)
Dialogue: 0,0:06:36.91,0:06:38.04,Default,,0000,0000,0000,,Certo.
Dialogue: 0,0:06:38.04,0:06:40.42,Default,,0000,0000,0000,,- [Homem] Não amarraria um cachorro\Nmuiito grande.
Dialogue: 0,0:06:40.42,0:06:44.64,Default,,0000,0000,0000,,- [Ryan] Vamos ver quão grande
Dialogue: 0,0:06:44.64,0:06:47.47,Default,,0000,0000,0000,,poderíamos amarrar com isto.
Dialogue: 0,0:06:47.47,0:06:49.74,Default,,0000,0000,0000,,Ohh, um Chiuaua.
Dialogue: 0,0:06:49.74,0:06:50.69,Default,,0000,0000,0000,,(homem ri)
Dialogue: 0,0:06:50.69,0:06:53.25,Default,,0000,0000,0000,,- Então se você é uma dessas pessoas
Dialogue: 0,0:06:53.25,0:06:56.33,Default,,0000,0000,0000,,que gosta de economizar\Ne usar
Dialogue: 0,0:06:56.33,0:06:58.78,Default,,0000,0000,0000,,fitas muito velhas e gastas,\Nboa sorte.
Dialogue: 0,0:06:58.78,0:07:00.34,Default,,0000,0000,0000,,- [Ryan] 24 kilonewtons,
Dialogue: 0,0:07:00.34,0:07:03.01,Default,,0000,0000,0000,,(barulho de máquina)
Dialogue: 0,0:07:04.07,0:07:05.58,Default,,0000,0000,0000,,não esticou muito
Dialogue: 0,0:07:05.58,0:07:08.29,Default,,0000,0000,0000,,Oh, adivinha, adivinha.
Dialogue: 0,0:07:08.29,0:07:09.12,Default,,0000,0000,0000,,- [Homem] Eu vi.
Dialogue: 0,0:07:09.12,0:07:13.44,Default,,0000,0000,0000,,- [Ryan] 4 Kilonewtons,\Nque porra é essa cara?
Dialogue: 0,0:07:13.44,0:07:18.44,Default,,0000,0000,0000,,- 4000 Newtons, ok quanto\Nesta fita aguenta?
Dialogue: 0,0:07:19.42,0:07:20.66,Default,,0000,0000,0000,,Bem fácil.
Dialogue: 0,0:07:20.66,0:07:24.70,Default,,0000,0000,0000,,Divida 4000 por 9.8.
Dialogue: 0,0:07:24.70,0:07:29.70,Default,,0000,0000,0000,,Se quiser mais fácil, divida por 10\Ne você tem 400 kilogramas.
Dialogue: 0,0:07:29.87,0:07:32.76,Default,,0000,0000,0000,,Parece muito.\NNão ? 400 kilogramas?
Dialogue: 0,0:07:33.94,0:07:38.94,Default,,0000,0000,0000,,Bem, todas estas conversões de\Nforça para kilogramas
Dialogue: 0,0:07:38.95,0:07:41.27,Default,,0000,0000,0000,,que eu tenho falado até\No momento
Dialogue: 0,0:07:41.27,0:07:45.69,Default,,0000,0000,0000,,são baseadas no fato de\Nque o peso é pendurado estaticamente.
Dialogue: 0,0:07:45.69,0:07:49.54,Default,,0000,0000,0000,,Uma vez que as coisas começam\Na cair, tudo muda.
Dialogue: 0,0:07:49.54,0:07:50.42,Default,,0000,0000,0000,,- [Homem] Vai.
Dialogue: 0,0:07:50.42,0:07:53.80,Default,,0000,0000,0000,,(estalo metálico)
Dialogue: 0,0:07:53.80,0:07:56.84,Default,,0000,0000,0000,,- O que acabamos de ver é um\Nclipe da DMM,
Dialogue: 0,0:07:56.84,0:07:59.90,Default,,0000,0000,0000,,onde eles deixam cair\Numa massa de 80kg,
Dialogue: 0,0:07:59.90,0:08:03.51,Default,,0000,0000,0000,,e quebra uma fita de Dyneema novinha.
Dialogue: 0,0:08:03.51,0:08:06.59,Default,,0000,0000,0000,,Meu objetivo agora não é assutá-lo\Nao contrário.
Dialogue: 0,0:08:06.59,0:08:09.52,Default,,0000,0000,0000,,Quero chamar atenção ao fato \Nque equipamentos de escalada
Dialogue: 0,0:08:09.52,0:08:14.39,Default,,0000,0000,0000,,não são mágicos, e se você \Nusá-los inadequadamante, eles podem falhar.
Dialogue: 0,0:08:16.60,0:08:19.35,Default,,0000,0000,0000,,Fato engraçado, sabe esta\Npiada que o escaladores
Dialogue: 0,0:08:19.35,0:08:21.83,Default,,0000,0000,0000,,gostam de fazer quando\Neles falham nas suas escaladas
Dialogue: 0,0:08:21.83,0:08:24.89,Default,,0000,0000,0000,,Que hoje é um dia de gravidade elevada ?
Dialogue: 0,0:08:24.89,0:08:27.07,Default,,0000,0000,0000,,Bem, acontece que é verdade.
Dialogue: 0,0:08:27.07,0:08:30.20,Default,,0000,0000,0000,,A gravidade muda mes a mes.
Dialogue: 0,0:08:30.20,0:08:32.58,Default,,0000,0000,0000,,Então se você é um desses
Dialogue: 0,0:08:32.58,0:08:35.83,Default,,0000,0000,0000,,que gosta de reclamar\Nda umidade,
Dialogue: 0,0:08:35.83,0:08:38.76,Default,,0000,0000,0000,,da temperatura, agora\Nvocê tem o direito de reclamar
Dialogue: 0,0:08:38.76,0:08:41.69,Default,,0000,0000,0000,,que hoje é um dia de gravidade ruim, yaay!
Dialogue: 0,0:08:41.69,0:08:43.95,Default,,0000,0000,0000,,Ok, vejamos o que acontece
Dialogue: 0,0:08:43.95,0:08:47.87,Default,,0000,0000,0000,,quando objetos como nós,\Nescaladores, caem.
Dialogue: 0,0:08:51.10,0:08:54.09,Default,,0000,0000,0000,,Esta foi uma queda de 10 metros.
Dialogue: 0,0:08:54.09,0:08:56.07,Default,,0000,0000,0000,,Vejamos quanta força esta queda
Dialogue: 0,0:08:56.07,0:08:58.01,Default,,0000,0000,0000,,poderia gerar para o escalador.
Dialogue: 0,0:08:58.01,0:09:00.21,Default,,0000,0000,0000,,A fórmula para isto seria bem similar
Dialogue: 0,0:09:00.21,0:09:03.54,Default,,0000,0000,0000,,ao que tínhamos antes, exceto que temos\Nque multiplicar
Dialogue: 0,0:09:03.54,0:09:07.01,Default,,0000,0000,0000,,isto pela distância que o escalador\Nestá caindo.
Dialogue: 0,0:09:07.01,0:09:11.12,Default,,0000,0000,0000,,e dividir pela distância que o escalador\Nestá freando.
Dialogue: 0,0:09:16.87,0:09:18.34,Default,,0000,0000,0000,,E você notou
Dialogue: 0,0:09:18.34,0:09:20.93,Default,,0000,0000,0000,,quão suave foi a queda para o escalador ?
Dialogue: 0,0:09:23.20,0:09:26.46,Default,,0000,0000,0000,,Então se imagine dirigindo um carro \Nna rodovia
Dialogue: 0,0:09:26.46,0:09:31.46,Default,,0000,0000,0000,,e pressionando o freio gentilmente\Naté parar por completo.
Dialogue: 0,0:09:31.62,0:09:33.11,Default,,0000,0000,0000,,Sem problemas, correto ?
Dialogue: 0,0:09:33.11,0:09:35.09,Default,,0000,0000,0000,,Agora imagine que você \Nnão está tão rapido,
Dialogue: 0,0:09:35.09,0:09:37.65,Default,,0000,0000,0000,,você está na cidade, dirigindo devagar,
Dialogue: 0,0:09:37.65,0:09:39.04,Default,,0000,0000,0000,,mas vocẽ senta o pé no freio,
Dialogue: 0,0:09:40.20,0:09:43.37,Default,,0000,0000,0000,,Não seria agradável, correto ?
Dialogue: 0,0:09:43.37,0:09:45.70,Default,,0000,0000,0000,,Aqui vai a primeira coisa que eu\Nquero que você lembre
Dialogue: 0,0:09:45.70,0:09:48.82,Default,,0000,0000,0000,,deste video, o impacto\Nno escaldor
Dialogue: 0,0:09:48.82,0:09:51.66,Default,,0000,0000,0000,,será sempre multiplicado pela distancia
Dialogue: 0,0:09:51.66,0:09:54.99,Default,,0000,0000,0000,,que o escalador caiu livre, \Ndividido pela distância
Dialogue: 0,0:09:54.99,0:09:57.36,Default,,0000,0000,0000,,da frenagem
Dialogue: 0,0:09:57.36,0:10:00.10,Default,,0000,0000,0000,,Vamos calcular, a distância em queda livre
Dialogue: 0,0:10:00.10,0:10:02.30,Default,,0000,0000,0000,,foi mais ou menos quatro costuras
Dialogue: 0,0:10:02.30,0:10:04.57,Default,,0000,0000,0000,,e a frenagem foi
Dialogue: 0,0:10:04.57,0:10:06.63,Default,,0000,0000,0000,,duas costuras e meia
Dialogue: 0,0:10:06.63,0:10:09.48,Default,,0000,0000,0000,,E temos aproximadamente 860 Newtons
Dialogue: 0,0:10:09.48,0:10:12.36,Default,,0000,0000,0000,,Ou, se a substituírmos por\Num escalador padrão
Dialogue: 0,0:10:12.36,0:10:17.36,Default,,0000,0000,0000,,de 80 kilogramas, seria \Npróximo de 1.3 kilonewtons
Dialogue: 0,0:10:18.14,0:10:19.14,Default,,0000,0000,0000,,o que não é muito.
Dialogue: 0,0:10:19.91,0:10:22.21,Default,,0000,0000,0000,,Embora esta fórmula tenha\Num pequeno problema
Dialogue: 0,0:10:22.21,0:10:26.47,Default,,0000,0000,0000,,pois dará sempre um valor\Nligeiramente menor
Dialogue: 0,0:10:26.47,0:10:28.81,Default,,0000,0000,0000,,do que seria na vida real.
Dialogue: 0,0:10:28.81,0:10:31.72,Default,,0000,0000,0000,,Mas mostrar como calcular\Nde forma precisa
Dialogue: 0,0:10:31.72,0:10:33.97,Default,,0000,0000,0000,,significaria que a maioria de vocês
Dialogue: 0,0:10:33.97,0:10:35.95,Default,,0000,0000,0000,,sairia do vídeo exatamente aqui.
Dialogue: 0,0:10:35.95,0:10:37.83,Default,,0000,0000,0000,,Não precisamos fazer isto,
Dialogue: 0,0:10:37.83,0:10:41.63,Default,,0000,0000,0000,,pois podemos contar com\Ndados experimentais reais
Dialogue: 0,0:10:41.63,0:10:44.81,Default,,0000,0000,0000,,E quem é o cara para nos\Nfornecer estes dados?
Dialogue: 0,0:10:44.81,0:10:46.18,Default,,0000,0000,0000,,- Oi, eu sou Ryan Jenks e ...
Dialogue: 0,0:10:46.18,0:10:49.26,Default,,0000,0000,0000,,E isto basta de propaganda\Npara você
Dialogue: 0,0:10:49.26,0:10:50.75,Default,,0000,0000,0000,,O que eles fizeram neste vídeo,
Dialogue: 0,0:10:50.75,0:10:54.44,Default,,0000,0000,0000,,eles colocaram um dispositivo\Nmedindo a força no escalador
Dialogue: 0,0:10:54.44,0:10:56.63,Default,,0000,0000,0000,,e realizaram uma série de quedas.
Dialogue: 0,0:10:58.86,0:11:00.74,Default,,0000,0000,0000,,- (rindo) Zach
Dialogue: 0,0:11:07.41,0:11:09.14,Default,,0000,0000,0000,,Pela Ciência, Woo Hoo
Dialogue: 0,0:11:12.98,0:11:14.73,Default,,0000,0000,0000,,Isto dá 1.87 kN
Dialogue: 0,0:11:15.95,0:11:18.19,Default,,0000,0000,0000,,Na maioria das quedas,\Nque na minha opinião,
Dialogue: 0,0:11:18.19,0:11:20.34,Default,,0000,0000,0000,,seriam exemplos de boa seg,
Dialogue: 0,0:11:20.34,0:11:22.71,Default,,0000,0000,0000,,a força esteve abaixo de 2 kN.
Dialogue: 0,0:11:22.71,0:11:26.43,Default,,0000,0000,0000,,Agora vamos olhar para\Nestes dois exemplos extremos
Dialogue: 0,0:11:26.43,0:11:29.56,Default,,0000,0000,0000,,O escalador da esquerda está\Ncinco metros acima da chapa,
Dialogue: 0,0:11:29.56,0:11:31.95,Default,,0000,0000,0000,,então daria uma queda de 10 metros
Dialogue: 0,0:11:31.95,0:11:34.03,Default,,0000,0000,0000,,mais a sobra no sistema
Dialogue: 0,0:11:34.03,0:11:37.09,Default,,0000,0000,0000,,O seg deu cerca de um \Nmetro de corda
Dialogue: 0,0:11:37.09,0:11:40.15,Default,,0000,0000,0000,,e deve ter mais um metro sobrando
Dialogue: 0,0:11:40.15,0:11:41.59,Default,,0000,0000,0000,,entre as costuras.
Dialogue: 0,0:11:41.59,0:11:44.97,Default,,0000,0000,0000,,No total, estamos \Nfalando de uma queda de 12 metros.
Dialogue: 0,0:11:44.97,0:11:48.47,Default,,0000,0000,0000,,Enquanto que o escalador\Na direita está apenas 1 metro acima da chapa
Dialogue: 0,0:11:48.47,0:11:51.32,Default,,0000,0000,0000,,E digamos que o seg está\Ncom muito medo,
Dialogue: 0,0:11:51.32,0:11:54.66,Default,,0000,0000,0000,,e ele vai ṕegar sem dinamizar
Dialogue: 0,0:11:54.66,0:11:57.18,Default,,0000,0000,0000,,Então estamos falando de uma\Nqueda de 2 metros.
Dialogue: 0,0:11:58.04,0:12:03.04,Default,,0000,0000,0000,,Então uma queda massiva de 12 metros,\Nou uma queda pequena de 2 metros;
Dialogue: 0,0:12:03.09,0:12:06.44,Default,,0000,0000,0000,,Qual você acha que será mais\Nsuave para o escalador?
Dialogue: 0,0:12:06.44,0:12:08.42,Default,,0000,0000,0000,,Bem, vejamos,
Dialogue: 0,0:12:08.42,0:12:11.44,Default,,0000,0000,0000,,
Dialogue: 0,0:12:11.44,0:12:14.88,Default,,0000,0000,0000,,
Dialogue: 0,0:12:14.88,0:12:17.70,Default,,0000,0000,0000,,
Dialogue: 0,0:12:17.70,0:12:20.58,Default,,0000,0000,0000,,
Dialogue: 0,0:12:20.58,0:12:24.09,Default,,0000,0000,0000,,
Dialogue: 0,0:12:24.09,0:12:27.22,Default,,0000,0000,0000,,
Dialogue: 0,0:12:27.22,0:12:30.11,Default,,0000,0000,0000,,
Dialogue: 0,0:12:30.11,0:12:32.56,Default,,0000,0000,0000,,
Dialogue: 0,0:12:32.56,0:12:34.43,Default,,0000,0000,0000,,
Dialogue: 0,0:12:34.43,0:12:38.21,Default,,0000,0000,0000,,
Dialogue: 0,0:12:38.21,0:12:41.43,Default,,0000,0000,0000,,
Dialogue: 0,0:12:41.43,0:12:44.70,Default,,0000,0000,0000,,
Dialogue: 0,0:12:44.70,0:12:49.16,Default,,0000,0000,0000,,
Dialogue: 0,0:12:49.16,0:12:52.60,Default,,0000,0000,0000,,
Dialogue: 0,0:12:52.60,0:12:55.44,Default,,0000,0000,0000,,
Dialogue: 0,0:12:55.44,0:12:58.55,Default,,0000,0000,0000,,
Dialogue: 0,0:12:58.55,0:13:01.59,Default,,0000,0000,0000,,
Dialogue: 0,0:13:01.59,0:13:04.53,Default,,0000,0000,0000,,
Dialogue: 0,0:13:04.53,0:13:06.81,Default,,0000,0000,0000,,
Dialogue: 0,0:13:06.81,0:13:09.25,Default,,0000,0000,0000,,
Dialogue: 0,0:13:09.25,0:13:11.28,Default,,0000,0000,0000,,
Dialogue: 0,0:13:11.28,0:13:12.82,Default,,0000,0000,0000,,
Dialogue: 0,0:13:12.82,0:13:14.93,Default,,0000,0000,0000,,
Dialogue: 0,0:13:14.93,0:13:17.99,Default,,0000,0000,0000,,
Dialogue: 0,0:13:17.99,0:13:21.11,Default,,0000,0000,0000,,
Dialogue: 0,0:13:21.11,0:13:24.66,Default,,0000,0000,0000,,
Dialogue: 0,0:13:24.66,0:13:27.57,Default,,0000,0000,0000,,
Dialogue: 0,0:13:27.57,0:13:30.12,Default,,0000,0000,0000,,
Dialogue: 0,0:13:30.12,0:13:33.58,Default,,0000,0000,0000,,
Dialogue: 0,0:13:33.58,0:13:36.89,Default,,0000,0000,0000,,
Dialogue: 0,0:13:36.89,0:13:39.50,Default,,0000,0000,0000,,
Dialogue: 0,0:13:39.50,0:13:42.39,Default,,0000,0000,0000,,
Dialogue: 0,0:13:42.39,0:13:44.29,Default,,0000,0000,0000,,
Dialogue: 0,0:13:44.29,0:13:49.29,Default,,0000,0000,0000,,
Dialogue: 0,0:13:49.61,0:13:55.49,Default,,0000,0000,0000,,
Dialogue: 0,0:13:55.63,0:13:59.38,Default,,0000,0000,0000,,
Dialogue: 0,0:13:59.38,0:14:01.48,Default,,0000,0000,0000,,
Dialogue: 0,0:14:01.48,0:14:04.20,Default,,0000,0000,0000,,
Dialogue: 0,0:14:04.20,0:14:06.09,Default,,0000,0000,0000,,
Dialogue: 0,0:14:06.09,0:14:08.59,Default,,0000,0000,0000,,
Dialogue: 0,0:14:08.59,0:14:11.49,Default,,0000,0000,0000,,
Dialogue: 0,0:14:11.49,0:14:13.81,Default,,0000,0000,0000,,
Dialogue: 0,0:14:13.81,0:14:16.91,Default,,0000,0000,0000,,
Dialogue: 0,0:14:19.54,0:14:22.84,Default,,0000,0000,0000,,
Dialogue: 0,0:14:22.84,0:14:25.26,Default,,0000,0000,0000,,
Dialogue: 0,0:14:25.26,0:14:27.86,Default,,0000,0000,0000,,
Dialogue: 0,0:14:27.86,0:14:31.46,Default,,0000,0000,0000,,
Dialogue: 0,0:14:31.46,0:14:33.89,Default,,0000,0000,0000,,
Dialogue: 0,0:14:33.89,0:14:37.75,Default,,0000,0000,0000,,
Dialogue: 0,0:14:37.75,0:14:41.18,Default,,0000,0000,0000,,
Dialogue: 0,0:14:41.18,0:14:45.24,Default,,0000,0000,0000,,
Dialogue: 0,0:14:45.24,0:14:49.57,Default,,0000,0000,0000,,
Dialogue: 0,0:14:49.57,0:14:52.60,Default,,0000,0000,0000,,
Dialogue: 0,0:14:52.60,0:14:54.94,Default,,0000,0000,0000,,
Dialogue: 0,0:14:54.94,0:14:58.60,Default,,0000,0000,0000,,
Dialogue: 0,0:14:58.60,0:15:02.17,Default,,0000,0000,0000,,
Dialogue: 0,0:15:02.17,0:15:06.54,Default,,0000,0000,0000,,
Dialogue: 0,0:15:06.54,0:15:09.66,Default,,0000,0000,0000,,
Dialogue: 0,0:15:09.66,0:15:13.58,Default,,0000,0000,0000,,
Dialogue: 0,0:15:13.58,0:15:15.11,Default,,0000,0000,0000,,
Dialogue: 0,0:15:16.47,0:15:17.87,Default,,0000,0000,0000,,
Dialogue: 0,0:15:17.87,0:15:19.18,Default,,0000,0000,0000,,
Dialogue: 0,0:15:19.18,0:15:21.83,Default,,0000,0000,0000,,
Dialogue: 0,0:15:21.83,0:15:25.37,Default,,0000,0000,0000,,
Dialogue: 0,0:15:25.37,0:15:27.48,Default,,0000,0000,0000,,
Dialogue: 0,0:15:28.37,0:15:30.03,Default,,0000,0000,0000,,
Dialogue: 0,0:15:30.03,0:15:33.33,Default,,0000,0000,0000,,
Dialogue: 0,0:15:33.33,0:15:36.46,Default,,0000,0000,0000,,
Dialogue: 0,0:15:36.46,0:15:38.74,Default,,0000,0000,0000,,
Dialogue: 0,0:15:38.74,0:15:41.36,Default,,0000,0000,0000,,
Dialogue: 0,0:15:41.36,0:15:45.52,Default,,0000,0000,0000,,
Dialogue: 0,0:15:45.52,0:15:48.36,Default,,0000,0000,0000,,
Dialogue: 0,0:15:48.36,0:15:52.01,Default,,0000,0000,0000,,
Dialogue: 0,0:15:52.01,0:15:54.71,Default,,0000,0000,0000,,
Dialogue: 0,0:15:54.71,0:15:57.30,Default,,0000,0000,0000,,
Dialogue: 0,0:15:57.30,0:15:58.65,Default,,0000,0000,0000,,
Dialogue: 0,0:15:58.65,0:16:00.81,Default,,0000,0000,0000,,
Dialogue: 0,0:16:00.81,0:16:03.30,Default,,0000,0000,0000,,
Dialogue: 0,0:16:03.30,0:16:06.93,Default,,0000,0000,0000,,
Dialogue: 0,0:16:06.93,0:16:10.23,Default,,0000,0000,0000,,
Dialogue: 0,0:16:10.23,0:16:12.80,Default,,0000,0000,0000,,
Dialogue: 0,0:16:12.80,0:16:15.72,Default,,0000,0000,0000,,
Dialogue: 0,0:16:15.72,0:16:17.51,Default,,0000,0000,0000,,
Dialogue: 0,0:16:17.51,0:16:20.14,Default,,0000,0000,0000,,
Dialogue: 0,0:16:20.14,0:16:21.93,Default,,0000,0000,0000,,
Dialogue: 0,0:16:21.93,0:16:23.47,Default,,0000,0000,0000,,
Dialogue: 0,0:16:23.47,0:16:25.97,Default,,0000,0000,0000,,
Dialogue: 0,0:16:25.97,0:16:29.39,Default,,0000,0000,0000,,
Dialogue: 0,0:16:29.39,0:16:34.32,Default,,0000,0000,0000,,
Dialogue: 0,0:16:34.32,0:16:36.86,Default,,0000,0000,0000,,
Dialogue: 0,0:16:36.86,0:16:39.13,Default,,0000,0000,0000,,
Dialogue: 0,0:16:39.13,0:16:41.70,Default,,0000,0000,0000,,
Dialogue: 0,0:16:41.70,0:16:44.93,Default,,0000,0000,0000,,
Dialogue: 0,0:16:44.93,0:16:49.22,Default,,0000,0000,0000,,
Dialogue: 0,0:16:49.22,0:16:51.96,Default,,0000,0000,0000,,
Dialogue: 0,0:16:51.96,0:16:54.79,Default,,0000,0000,0000,,
Dialogue: 0,0:16:54.79,0:16:59.68,Default,,0000,0000,0000,,
Dialogue: 0,0:16:59.68,0:17:02.05,Default,,0000,0000,0000,,
Dialogue: 0,0:17:02.05,0:17:05.62,Default,,0000,0000,0000,,
Dialogue: 0,0:17:05.62,0:17:07.55,Default,,0000,0000,0000,,
Dialogue: 0,0:17:07.55,0:17:09.30,Default,,0000,0000,0000,,
Dialogue: 0,0:17:09.30,0:17:11.30,Default,,0000,0000,0000,,
Dialogue: 0,0:17:11.30,0:17:13.71,Default,,0000,0000,0000,,
Dialogue: 0,0:17:13.71,0:17:17.00,Default,,0000,0000,0000,,
Dialogue: 0,0:17:17.00,0:17:19.54,Default,,0000,0000,0000,,
Dialogue: 0,0:17:19.54,0:17:23.73,Default,,0000,0000,0000,,
Dialogue: 0,0:17:23.73,0:17:27.56,Default,,0000,0000,0000,,
Dialogue: 0,0:17:27.56,0:17:29.24,Default,,0000,0000,0000,,
Dialogue: 0,0:17:29.24,0:17:30.54,Default,,0000,0000,0000,,
Dialogue: 0,0:17:30.54,0:17:31.37,Default,,0000,0000,0000,,
Dialogue: 0,0:17:34.28,0:17:36.33,Default,,0000,0000,0000,,
Dialogue: 0,0:17:36.33,0:17:39.74,Default,,0000,0000,0000,,
Dialogue: 0,0:17:39.74,0:17:43.96,Default,,0000,0000,0000,,
Dialogue: 0,0:17:43.96,0:17:46.77,Default,,0000,0000,0000,,
Dialogue: 0,0:17:46.77,0:17:47.82,Default,,0000,0000,0000,,
Dialogue: 0,0:17:47.82,0:17:50.23,Default,,0000,0000,0000,,
Dialogue: 0,0:17:50.23,0:17:52.50,Default,,0000,0000,0000,,
Dialogue: 0,0:17:52.50,0:17:55.92,Default,,0000,0000,0000,,
Dialogue: 0,0:17:55.92,0:17:57.33,Default,,0000,0000,0000,,
Dialogue: 0,0:17:57.33,0:17:59.53,Default,,0000,0000,0000,,
Dialogue: 0,0:17:59.53,0:18:03.41,Default,,0000,0000,0000,,
Dialogue: 0,0:18:03.41,0:18:05.29,Default,,0000,0000,0000,,
Dialogue: 0,0:18:05.29,0:18:06.12,Default,,0000,0000,0000,,
Dialogue: 0,0:18:06.12,0:18:09.12,Default,,0000,0000,0000,,
Dialogue: 0,0:18:16.65,0:18:20.65,Default,,0000,0000,0000,,
Dialogue: 0,0:18:20.65,0:18:23.93,Default,,0000,0000,0000,,
Dialogue: 0,0:18:23.93,0:18:25.72,Default,,0000,0000,0000,,
Dialogue: 0,0:18:25.72,0:18:29.73,Default,,0000,0000,0000,,
Dialogue: 0,0:18:29.73,0:18:31.52,Default,,0000,0000,0000,,
Dialogue: 0,0:18:31.52,0:18:34.98,Default,,0000,0000,0000,,
Dialogue: 0,0:18:34.98,0:18:37.60,Default,,0000,0000,0000,,
Dialogue: 0,0:18:37.60,0:18:40.65,Default,,0000,0000,0000,,
Dialogue: 0,0:18:40.65,0:18:41.95,Default,,0000,0000,0000,,
Dialogue: 0,0:18:41.95,0:18:43.86,Default,,0000,0000,0000,,
Dialogue: 0,0:18:43.86,0:18:46.23,Default,,0000,0000,0000,,
Dialogue: 0,0:18:46.23,0:18:51.16,Default,,0000,0000,0000,,
Dialogue: 0,0:18:51.16,0:18:54.59,Default,,0000,0000,0000,,
Dialogue: 0,0:18:54.59,0:18:57.98,Default,,0000,0000,0000,,
Dialogue: 0,0:18:57.98,0:19:01.96,Default,,0000,0000,0000,,
Dialogue: 0,0:19:01.96,0:19:06.16,Default,,0000,0000,0000,,
Dialogue: 0,0:19:06.16,0:19:08.85,Default,,0000,0000,0000,,
Dialogue: 0,0:19:08.85,0:19:11.99,Default,,0000,0000,0000,,
Dialogue: 0,0:19:11.99,0:19:14.07,Default,,0000,0000,0000,,
Dialogue: 0,0:19:14.07,0:19:16.03,Default,,0000,0000,0000,,
Dialogue: 0,0:19:16.03,0:19:18.44,Default,,0000,0000,0000,,
Dialogue: 0,0:19:18.44,0:19:20.44,Default,,0000,0000,0000,,
Dialogue: 0,0:19:21.32,0:19:23.84,Default,,0000,0000,0000,,
Dialogue: 0,0:19:23.84,0:19:27.12,Default,,0000,0000,0000,,
Dialogue: 0,0:19:27.12,0:19:28.88,Default,,0000,0000,0000,,
Dialogue: 0,0:19:28.88,0:19:31.80,Default,,0000,0000,0000,,
Dialogue: 0,0:19:31.80,0:19:34.11,Default,,0000,0000,0000,,
Dialogue: 0,0:19:34.11,0:19:36.36,Default,,0000,0000,0000,,
Dialogue: 0,0:19:36.36,0:19:38.89,Default,,0000,0000,0000,,
Dialogue: 0,0:19:38.89,0:19:41.44,Default,,0000,0000,0000,,
Dialogue: 0,0:19:41.44,0:19:44.59,Default,,0000,0000,0000,,
Dialogue: 0,0:19:44.59,0:19:47.28,Default,,0000,0000,0000,,
Dialogue: 0,0:19:47.28,0:19:50.46,Default,,0000,0000,0000,,
Dialogue: 0,0:19:50.46,0:19:52.36,Default,,0000,0000,0000,,
Dialogue: 0,0:19:52.36,0:19:55.46,Default,,0000,0000,0000,,
Dialogue: 0,0:19:55.46,0:19:57.96,Default,,0000,0000,0000,,
Dialogue: 0,0:19:57.96,0:19:58.79,Default,,0000,0000,0000,,