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A particle is released from the top of t...

A particle is released from the top of the smooth hemisphere `R` as shown.
the normal contact between the particle and the hemisphere in position `theta` is

A

`mg(3-2costheta)`

B

`mg(3cos theta-2)`

C

`mg(4costheta-3)`

D

`mg(4-3costheta)`

Text Solution

Verified by Experts

The correct Answer is:
B
`v^(2)=2gh=2gR(1-cos theta)`
`mg costheta-N=(mv^(2))/(R )=2mg(1-costheta)`
`N=mg(3 cos theta-2)`

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