→ A force acts on the body.

→ There is a displacement of the body caused by the applied force along the direction of the applied force.

[**NCERT In Text**]

Write an expression for the work done when a force is acting on an object in the direction of its displacement.

When a force F displaces a body through a distance S in the direction of the applied force, then the work done W on the body is given by the expression:

Work done = Force × Displacement

W = F x s

[**NCERT In Text**]

A pair of bullocks exerts a force of 140 N on a plough. The field being ploughed is 15 m long. How much work is done in ploughing the length of the field?

Work done by the bullocks is given by the expression:

Work done = Force x Displacement

*W= F *x *d*

Where,

Applied force, F = 140 N

Displacement, d = 15 m

W= 140 x 15 = 2100 J

Hence, 2100 J of work is done in ploughing the length of the field.