Question

A 40 kg girl is running along a circular path of radius 1 m with a uniform speed. How much work is done by the girl in completing one circle?

Answer 1

0 because
W=F×D
W=F× 0(because in complete circle their is zero displacement
0is the answer

Answer 2

According to the mathematical formula for calculating the work done by any effort is :

W = F×D

(W= Work , F = Force and D = Displacement)

Now we all know that if we completing a journey in a circular path where the starting and ending points are same ,the total displacement will be zero.

So if we apply data we get ,into the mathematical formula:

W= F× 0 (Displacement is zero)

W = 0

The amount of work done by that girl is zero . (Answer)