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April 21, 2014

Homework Help: Physics

Posted by John on Saturday, March 19, 2011 at 4:30pm.

A figure skater spins on the ice, holding two weights a distance d from the axis about which he is rotating.  At a certain time, he pulls these weights toward his body as shown, causing his rotational inertia to decrease by a factor of 2.  How does this affect the total kinetic energy of the skater?

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