Question

definition of zero work????​

Answer 1

Answer:

The work done by a force is zero if the displacement is either zero or perpendicular to the force. The work done is positive if the force and displacement have the same direction, and negative if they have opposite directions.

Answer 2

Explanation:

There will be two cases

i) When there no displacement of the body

ii) When there 90° angle between the force and displacement