Question

state the condition under which a force does no work.give any one example​

Answer 1

Answer:

we know

work done= force * displacement

so if we push a heavy object where the displacement of the object is zero thn the workdone is also zero

Answer 2

Answer:

Explanation:

For work to be done, the force must be applied and must not be zero. The body on which the force is applied must move in one direction or the other and hence the S must not be zero. The force must not be applied at 90 degrees angle upon the object as Cos 90 equals zero