Question

A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force. Let us take it that the force acts on the object through the displacement. What is the work done in this case? [2 MARKS]

Answer 1

Each point: 1 Mark

1. When a force F acts on an object to displace it through a distance S in its direction, then the work done
W on the body by the force is given by:
Work done = $Force\times Displacement$
$W=F\times S$

2. Where, F = 7 N S = 8 m
Therefore, work done,
$W=7\times 8$ = 56 Nm = 56 J