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Angular Velocity: spinning in chair, dropping weights with arms out 
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#1
Feb2214, 11:55 PM

P: 36

Would someone be willing to explain this? Here: http://www.physicsforums.com/showthread.php?t=487058
I read the entire thread and don't understand. I need one person to explain it step by step all in one place. In my case it's not a homework question. Please don't use the Socratic method! Just explain in plain English. Thank you! (As an aside, I've never been able to learn from the Socratic method. It confuses me. With the Socratic method, I always remember the incorrect theories and never the correct ones. This question is a real doozy: http://forums.studentdoctor.net/thre...roblem.809233/ http://forums.studentdoctor.net/thre...vii45.975274/) 


#2
Feb2314, 01:24 AM

P: 1,475

It might help for you to explain what specific part of the the thread or statement within is bothering you.
Otherwise it could become an exercise of futility, discussing that which you already do understand, and then not discussing that which you do not. That would not be much help to you. The other two links, by the way, seem to be an execise in how to promote confusion. 


#3
Feb2314, 03:17 AM

P: 36




#4
Feb2314, 04:42 AM

P: 932

Angular Velocity: spinning in chair, dropping weights with arms out
So don't analyze the nonclosed system consisting of the student plus weights. Analyze the closed system consisting of the student alone. When the student opens his or her hands, releasing the weights, does this involve an external torque on the student? Nope. So the angular momentum of the student alone does not change as a result. When the student opens his or her hands does this involve a change in moment of inertia of the student alone? Nope. So the angular velocity of the student alone does not change either. 


#5
Feb2314, 08:35 AM

Thanks
P: 1,948




#6
May2514, 12:47 AM

P: 2

Read below.



#7
May2514, 12:56 AM

P: 2




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