A sled is pulled east along level ground while three horizontal forces act on it:…

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

Problem

A sled is pulled

6\,\text{m}

east along level ground while three horizontal forces act on it: Force 1:

5\,\text{N}

0^\circ

from east, Force 2:

4\,\text{N}

60^\circ

from east, Force 3:

6\,\text{N}

120^\circ

from east. Calculate the net work done by these forces. (a)

18\,\text{J}

(b)

24\,\text{J}

(c)

12\,\text{J}

(d)

30\,\text{J}