Question

Question 1
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?

Answer 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 = $Force\times Displacement$
$W=F\times S$
Where, F = 7 N and S = 8 m
Therefore, work done, $W=7\times 8$ = 56 Nm = 56 J