Answer: τ = Iα.
- A τ = Iα
- B L = Iω
- C τ = r × F
- D I = mr²
Correct answer: A. τ = Iα
Explanation: Torque = moment of inertia x angular acceleration, just as force = mass x linear acceleration.
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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