Question

Define the term 'work done'.When is work done by a force zero ?​

Answer 1

Answer:

PRODUCT OF FORCE AND DISPLACEMENT IS WORK ..

WHEN FORCE APPLIED AND DISPLACEMENT BOTH ARE PERPENDICULAR TO EACH OTHER WE SAY WORK DONE IS ZERO ...

Hope it helps ..^_^

Answer 2

there is no work done

Explanation:

As,there was no force but we need to apply force to do a work .

So no work is done