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A particle of mass m is suspended from t...

A particle of mass m is suspended from the ceiling through a string of length L. The particle moves in a horizontal circle of radius r. The speed of the particle is

A

`(rg)/(sqrt(L^(2)-r^(2)))`

B

`(rsqrtg)/((L^(2)-r^(2))^((1)/(4)))`

C

`(rsqrtg)/((L^(2)-r^(2))^((1)/(2)))`

D

`(mgL)/((L^(2)-r^(2))^((1)/(2)))`

Text Solution

Verified by Experts

The correct Answer is:
B
`(F)/(r )=(mg)/(sqrt(L^(2)-r^(2)))`
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