Question

A body is revolving with a constant speed along a circular path. If the direction of its velocity is reserved, keeping speed unchanged, then at that instant.

• A. centripetal force disappears
• B. centripetal force will be doubled
• C. the centripetal force does not suffer any change in magnitude and direction both
• D. the centripetal force does not suffer any change in magnitude but its direction is reserved.

Answer 1

The correct option is C the centripetal force does not suffer any change in magnitude and direction both

Centripetal force is defined as the net force $towards$ center so its direction will not change.

Its magnitude is given as $a=\frac{v^2}{r}$, where $v$ is the speed which is given as constant. so $magnitude$ of a is constant.

Option C is correct.

Note- The important thing is that we need to apply some force tangentially to $\ast reverse\ast$ the velocity.