Question

Force responsible for the circular motion of the body is

• A. centripetal force
• B. centrifugal force
• C. gravitational force
• D. None of these

Answer 1

Answer: (A)

A body performing circular motion is acted upon by a force which is always directed towards the centre of the circle. The force is called centripetal force. In the absence of this force the circular motion is not possible. If $m$ is the mass of the body and $v$ is velocity and $r$ is radius then magnitude of centripetal force is
$F=\frac{m{v}^2}{r}$