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A small particle of mass m attached with...

A small particle of mass `m` attached with a light inextensible thread of length `L` is moving in a vertical circle. In the given case particle is moving in complete vertical circle and ratio of its maximum to minimum velocity is `2:1` .
Kinetic energy of the particle at the lower most position is

A

`(4mgL)/(3)`

B

`2mgL`

C

`(8mgL)/(3)`

D

`(2mgL)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
`u_(max)=2u_(min)=4sqrt((gL)/(3))`
:. `K_(max)=(1)/(2)mu_(max)^(2)=(8mgL)/(3)`
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