Physics

Problem

A rope pulls a sled with a constant force of

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}

90^{\circ}

60^{\circ}

30^{\circ}