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A dancer on ice spins faster when she folds her arms. This is due to

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An Intiative by Sri Chaitanya

Increases in energy and increase in angular momentum

Decrease in friction at the skates

Constant angular momentum and increase in kinetic energy

Increase in energy and decreases in angular momentum

answer is C.

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Detailed Solution

Angular momentum of the dancer is constant because no external torque act on it.

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