The work done by a constant force is positive only when the angle between the force…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

The work done by a constant force is positive only when the angle

\theta

between the force and the displacement satisfies which of the following ranges? (a)

90^{\circ}<\theta<180^{\circ}

(b)

0^{\circ}<\theta<180^{\circ}

(c)

0^{\circ}<\theta<90^{\circ}

(d)

180^{\circ}<\theta<360^{\circ}