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Question

A torque of 12Nm is applied to a disk with moment of inertia 4kg m2. What is its angular acceleration?

Options

Choose one · Correct answer highlighted

Explanation

τ = Iα. τ = 12Nm, I = 4kg m2. α = τI = 124 = 3rad/s2. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 3 rad/s². This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.

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