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Angular Momentum

A person with...

Question

A person with his arms stretched is sitting on a stool rotating at a constant speed. His angular momentum

A

Increases, if he folds his arms

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B

Decreases, if he folds his arms

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C

Remains unchanged, if he folds his arms

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D

Doubles, if he folds his arms

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Solution

The correct option is B Decreases, if he folds his arms

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