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?

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 × Displacement 

W = F × S Where, 

F = 7 N S = 8 m 

Therefore, work done, W = 7 × 8 

= 56 Nm 

= 56 J