Question

When is the work done by a force on a body said to be zero? Give two examples. ​

Answer 1

Answer:Negative work is performed if the displacement is opposite to the direction of the Force applied. Example: Work was done the gravity on a rocket going perpendicular upwards. Zero work: When force and displacement are perpendicular to each other, or when force or displacement is zero.

Answer 2

Answer:

When the force applied is not enough to overcome the irregularities and there is no impact or change in the object