Question

A boy pushes a book by applying a force of 40N. Find the work done by this force as the book is displaced through 25 cm along the path.

Answer 1

work done = f×s
=40 × 25
= 1000j

Answer 2

Given ;

Force (F) = 40 N

Displacement (d) = 25 cm = 0.25 m

To Find :

Work Done

Solution :

We know, Work Done = Force (F) × Displacement (d)

as F = 40 N and Displacement = 0.25 m

Work Done = F × d

                   =  40 × 0.25

                   = 10 J

Therefore, the work done in displacing the book through 25 cm by applying a force of 40 N is found to be 10 J.