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3’ I .13“ \[email protected] A ﬁgure skater stands on one spot on the ice (assumed frictionless) and Spins around with her arms extended. When she pulls in her arms, she reduces her rotational inertia and her angular speed increases so that her angu— '
lar momentum is conserved. Compared to her initial rotational kinetic energy, her rotation— al kinetic energy after she has pulled in her arms must be ' 1. the same. @larger because she’s rotating faster.
3? smaller because her rotational inertia is smaller.
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 Winter '08
 DEMAREE
 Physics, Angular Momentum, Kinetic Energy, Moment Of Inertia, wkl ch I‘m

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