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The breaking strength of a string is 55 ...

The breaking strength of a string is `55 kg wt`. The maximum permissible speed of a stone of mass `5 kg` which is revolved in a vertical circle of radius `4m` with the help of this string is `(g = 10 m//s^(2))`

A

`10 m//sec`

B

`15 m//sec`

C

`20 m//sec`

D

`25 m//sec`

Text Solution

Verified by Experts

The correct Answer is:
C
`T_("max") = m(v^(2)/(r )+g)`
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