Question

examples in which work is done there is no change in the position of the object. you are the only Masters there can only answer this question.

Answer 1

Answer:

a coolie is standing still,. with load on his head,. a man exerting force against a wall,. a child pushing a heavy stone and is unable to move it

Hope it helps you

Answer 2

ANSWER: now, imagine yourself standing at one place picking up a heavy thing,for example: A HEAVY STONE, when you finish picking the stone up the work done by you on the stone will be 0

EXPLANATION : first of all the if displacement of any thing is horizontally w(work done ) on it is counted as 0 because  

w (work done) when body move at an angle to the direction of force

=F x cosΘ

and cos90 = 0 , hence work done will also be zero