Circular Motion Questions

A stone tied to a string is whirled in a circle. As it was revolving, the rope suddenly snaps. Then

Three friends A, B and C start running around a circular stadium and complete a single round in $24\text{ seconds}$, $36\text{ seconds}$ and $30\text{ seconds}$, respectively. After how many minutes will they meet again at the starting point?

A particle is moving in a uniform circular motion with constant speed $V$ along a circle of radius $r$. The acceleration of the particle is:

A horse is tied to a post by a rope. If the horse moves along a circular path, always keeping the rope tight, and describes $88\text{m}$ when it traces $72^{\circ }$ at the centre, then the length of the rope is

A stone tied to a string is whirled in a circle. As it was revolving, the rope suddenly snaps. Then: