A stone tied to string is rotated in a vertical circle. The... | PHYSICS - UNIFORM CIRCULAR MOTION | SolveeIt | Solveeit

Today, August 19

Question

A stone tied to string is rotated in a vertical circle. The minimum speed with which the string has to be rotated

A

Decreases with increasing mass of the stone

B

Is independent of the mass of the stone

C

Decreases with increasing in length of the string

D

Is independent of the length of the strin

Answer

Is independent of the mass of the stone

Explanation

Solution

$v = \sqrt{5gr}$ for lowest point of vertical loop.

$v \propto m^{0}$ i.e. it does not depends on the mass of the body.