Rotational Kinetic Energy · College Physics

College Physics Quiz

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ROTATION: ENERGY & ANGULAR MOMENTUM

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A figure skater pulls her arms inward, reducing her moment of inertia from

I_1

I_2 = \frac{I_1}{3}

. If her initial rotational kinetic energy was

KE_1

, what is her final rotational kinetic energy

KE_2

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