Question

No work is done when an object moves:

• A. along the direction of force
• B. opposite to the direction of force
• C. at any angle to the direction of force
• D. at ${90}^0$ to the direction of force

Answer 1

The correct option is D

at ${90}^0$ to the direction of force

Explanation for correct option:

1. No work is done when a force acts at right angles to the direction of displacement.
2. It is because in such a situation displacement in the direction of force is zero.

Hence, the correct answer is option (D).