Question

under what conditions the work done said be positive, negative and zero

please answer this it is short question answer​

Answer 1

Answer:

1.bro if work is done on system then it is positive

2.if work is done by system to surrounding it's negative

3.under equilibrium work is zero

Answer 2

Answer:

work done is said to be positive if force is applied in the direction of the displacement of the object

negative-- if the force acts opposite to the direction of displacement

zero work-- if the force acts perpendicular to the direction of displacement