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07-23 Making Calculations Solution

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    Well, let's see. How do we solve this.
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    Well, I know that the potential energy over here is going to be equal to the kinetic energy
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    it has when it passes through the equilibrium.
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    Remember at the the equilibrium point, there's no potential energy.
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    All of that energy must have been converted into kinetic energy.
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    Okay, so let's do the math. Potential energy gets converted to kinetic energy.
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    Use the appropriate equations and when I solve for V--that should be a max
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    and I'm solving for the Vmax as well.
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    I get this for an answer and plugging in the appropriate values--I get an answer of 4.5 m/s.
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    Now something that's interesting here is that this could've been positive number
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    or a negative number--a positive number would have corresponded to when the mass
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    is moving this way and negative would have corresponded to when the mass is moving that way.
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    In fact, there's a lot we can learn about simple harmonic motion by just calculating velocity,
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    keeping track of sign and plotting it on a diagram versus position.
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    What do I mean by that? Well, I'll show you.
Title:
07-23 Making Calculations Solution
Team:
Udacity
Project:
PH100 - Intro to Physics
Duration:
0:56
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