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A spinning ice skater can increase his r...

A spinning ice skater can increase his rate of rotation by bringing his arms and free leg closer to his body. How does this procedure affect the skater's angular momentum and kinetic energy.

A

angular momentum remains the same while kinetic enery increases

B

angular momentum remains the same while kinetic enegry decreases

C

both angular momentum acid kinetic energy remain the same

D

angular momentum increases while energy remains the same

Text Solution

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The correct Answer is:
A
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