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An ice skater, whose moment of inertia is I = 4 kg-m2, is spinning at 2 rad/sec. She changes her moment of inertia to 2 kgm2 by changing the...

An ice skater, whose moment of inertia is I = 4 kg-m2, is spinning at 2 rad/sec. She changes her moment of inertia to 2 kgm2 by changing the configuration of her body.
Her angular momentum remains the same
angular velocity increases
kinetic energy increases
all of above
 

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