Question Detail
Question
The power P delivered by a constant torque τ to an object rotating with angular velocity ω is
Correct Answer
Option B is the correct answer.
Detailed Explanation
Power is the rate of doing work. Since work dW = τ dθ, power P = dW/dt = τ (dθ/dt) = τ ω. This is analogous to the translational power formula P = F v.
Hint
Power is work per unit time. Relate the work formula for rotation to time.