Answer: Increases.
- A Increases
- B Decreases
- C Stays the same
- D Becomes zero
Correct answer: A. Increases
Explanation: Angular momentum L = Iω is conserved. Pulling arms in reduces I, so ω must increase to keep L constant.
Torque about axis O equals the force F multiplied by the perpendicular distance r⊥ from the axis to the line of action of the force, producing rotation.
Concept context
Moment of inertia, torque, angular momentum, rolling motion. Very high JEE weightage.
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