Question

A pair ofbullocks exerts a force of 140 N on a plough. The field beingploughed is 15 m long. How much work is done in ploughing the lengthof the field?

Answer 1

Workdone by the bullocks is given by the expression:

Workdone = Force ×Displacement

W= F ×d

Where,

Appliedforce, F =140 N

Displacement,d = 15 m

W= 140 ×15 = 2100 J

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