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

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5.Work, Energy, Power and Collision

easy

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

A

Is independent of the mass of the stone

B

Is independent of the length of the string

C

Decreases with increasing mass of the stone

D

Decreases with increasing in length of the string

Solution

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

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

Standard 11

Physics

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