Answer: Parallel axis theorem.
- A Parallel axis theorem
- B Perpendicular axis theorem
- C Superposition theorem
- D Equipartition theorem
Correct answer: A. Parallel axis theorem
Explanation: Parallel axis theorem: I = I<sub>cm</sub> + Md², where d is the distance between the two parallel axes.
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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