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dvdqnoc
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How do you find the Kinetic Energy of a person spinning on a chair with 2 equal weights on each arm?
A specific problem asks what the change in KE is if he moves his originally extended arms inward.
I tried doing (1/2)(I)(wf)^2 - (1/2)(I)(wi)^2 where wi is initial angular velocity and wf is final angular velocity, but its wrong.
Any help?
A specific problem asks what the change in KE is if he moves his originally extended arms inward.
I tried doing (1/2)(I)(wf)^2 - (1/2)(I)(wi)^2 where wi is initial angular velocity and wf is final angular velocity, but its wrong.
Any help?