Which expression gives the work done when a constant torque is exerted through an…

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Energy and Momentum of Rotating Systems · Energy and Momentum of Rotating Systems

Problem

Which expression gives the work done when a constant torque

\tau

is exerted through an angular displacement

\Delta\theta

? (a)

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

(b)

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

(c)

W = \tau\,\Delta\theta

(d)

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