Question

For a body moving in a circular path, the work done by the centripetal force is ___________

(a) Negative

(b) Positive

(c) Constant

(d) Zero

The question was posed to me during an online interview.

I'm obligated to ask this question of Work, Energy and Power in division Nature of Physical World of Engineering Physics I

Answer 1

Correct answer is (d) Zero

Explanation: For a body moving in a circular path, the centripetal force and the displacement are perpendicular to each other. So the work done by the centripetal force is zero.