Question

When do we say that work is done? Give two examples.

Answer 1

1. Mathematically, we can define work as the product of the force applied and displacement travelled by the body in the direction of the force.
2. $Work=ForcexDisplacement$

For work to be done, the following two conditions should be fulfilled:

1. Force should be applied to an object.
2. The applied force should produce a motion of the object in the same direction as the applied force.