Question

a boy walks 100 m while carrying a bag on his shoulder.scientifically the boy has done no work.explain the statement as clearly as possible​

Answer 1

Explanation:

This is because when the boy walks 100m while carrying a bag on his shoulders the angle made by the weight acting downwards with the direction of motion is 90°.

And we know that,

Work Done = F×s×cosx

= F×s×cos90

= F×s×0

= 0 .........(1)

Therefore from (1),

Work done = 0

☺☺☺

Answer 2

Answer:

A boy walks 100 m while carrying a bag on his shoulder. scientifically the body has done no work explain the statement as clearly as possible