A coolie lifts a box of 15 kg from the ground to a height of 2 m. Calculate the work done by coolie on the box. (Given, g = 9.8 ${{ms}^{2}}$)

Now, force applied, F w mg = 15 x 9.8 = 147 N

.’. Work done, W= Fx s= 147 X 2 = 294 N

Now, force applied, F w mg = 15 x 9.8 = 147 N

.’. Work done, W= Fx s= 147 X 2 = 294 N