A rope pulls a sled with a constant force of

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

Problem

30\,\text{N}

. At what angle to the direction of motion should the rope be held so that dragging the sled through

8\,\text{m}

requires only

120\,\text{J}

of work? (a)

45^{\circ}

(b)

90^{\circ}

(c)

60^{\circ}

(d)

30^{\circ}