COMEDK · Physics · 8. Rotational Motion
A person sitting firmly over a rotating stool has his arms stretched. If he folds his arms, his angular momentum about the axis of the rotation
- A increases
- B decreases
- C remains unchanged
- D doubles
Answer & Solution
Correct Answer
(C) remains unchanged
Step-by-step Solution
Detailed explanation
According to conservation of angular momentum, when no external torque is applied on the rotating system, then its angular momentum remains unchanged.
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