Practice question
Question
A torque of 16Nm is applied to a wheel with moment of inertia 8kg m2. What is its angular acceleration?
Explanation
τ = Iα. τ = 16Nm, I = 8kg m2. α = τI = 168 = 2rad/s2. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 2 rad/s². This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.