Question

A body is revolving with a constant speed along a circle. If its direction of motion is reversed but the speed remains the same then?
(a) the centripetal force will not suffer any change in magnitude
(b) the centripetal force will have its direction reversed
(c) the centripetal force will not suffer any change in direction
(d) the centripetal force is doubled.

• A. A, B
• B. B, C
• C. C, D
• D. A, C

Answer 1

Answer: (A)

A, B

Centripetal force =$\frac{m{v}^2}{r}$ and is directed always towards the centre of circle. Sense of rotation does not affect magnitude and direction of this centripetal force.