Question

when do we say that work is done ?

Answer 1

$\huge{HELLO}$

$\small \bold{Your \: answer : }$

Work is done whenever the given conditions are satisfied.

(i) A force acts on the body.

(ii) There is a displacement of the body caused by the applied force the direction of the applied force.

$\boxed{Hope \: its \: helps \: you}$

Answer 2

If a force is applied but the object doesn't move no work is done; if a force is applied and the object is moves a distance in a direction other than the direction of the force less work is done than if the object moves a distance in the direction of the applied force.

I hope this will help you