Which expression gives the work done on a rigid body when a constant net torque acts…

PHYSICS · Single correct · A Level · Physics · Engineering physics · Engineering physics

Problem

Which expression gives the work done on a rigid body when a constant net torque

\tau

acts through an angular displacement

\Delta\theta

? (a)

W = \dfrac{\tau}{\Delta\theta}

(b)

W = \tau\,\Delta\theta^{2}

(c)

W = \tau\,\Delta\theta

(d)

W = \dfrac{1}{2}\,\tau\,\Delta\theta