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Work Energy/Momentum Problem  Why is there a loss of energy? 
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#1
Dec712, 07:41 PM

P: 368

1. The problem statement, all variables and given/known data
Here is the question with the solution 3. The attempt at a solution First off, where is the energy loss going into? What causes the system to lose energy? Secondly what is the term I circled in red? The one with 0.22948, where does that come from? Thanks! 


#2
Dec712, 07:56 PM

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P: 4,843

1. What type of collision takes place at point B? Elastic or inelastic?
2. For the red circled term, do you understand the term before it? The red circled term is similar. What principle is being expressed by the equation that contains these terms? 


#3
Dec712, 08:19 PM

P: 368

2. The term before it is the angular momentum at B about the center of mass right? I see it on the diagram on the bottom left corner of the solution. But I don't see the other term any where on the diagram. The principle is conservation of angular momentum. 


#4
Dec712, 10:13 PM

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Work Energy/Momentum Problem  Why is there a loss of energy?



#5
Dec712, 10:27 PM

P: 368

2. OHHHHHHHHHHH I think I got it. I think you mean vertical component of the velocity right. Because sin6.892 of the momentum is the vertical component. That would explain why it is negative since r x (mv) is into the page and thus clockwise. Also thanks a lot for you help! 


#6
Dec712, 10:43 PM

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