Question

A father pushes his child on a swing. He pushes with a force of 20 N or a distance of 1 m, with the force always maintained parallel to the direction of motion of the swing. How much work did the father do

Answer 1

Answer:

20 Joules

Explanation:

Work is done whenever a force moves a body through a certain distance in the direction of the force. So, work done is the product of force and distance moved.

Therefore, we have;

Work done = Force x distance

i.e   Wd = Fs

Given that: F = 20 N and s = 1 m, then;

Wd = 20 N x 1 m

     = 20 Nm

The work done by the father is 20 Joules(Nm).