Question

A particle of mass 'm'is attached to a string and is rotating in a vertical circle. The forces acting on it are?

Answer 1

tension of string , mg ( gravitational force ) centripetal force reaction force

Answer 2

Explanation:

It is given that, a particle of mass 'm'is attached to a string and is rotating in a vertical circle. The forces acting on it are the gravitational force i.e. its weight in downwards direction. Also a tension will also acting in upward direction.

Since, the particle is rotating in a vertical circle. So, a centripetal force will also act on it.

So, all the forces acting on the particle of mass m are :

$W=mg$

$F_c=\dfrac{mv^2}{r}$

Where

r is the radius of circle

v is the velocity of the particle.