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A small disc is on the top of a hemisphe...

A small disc is on the top of a hemisphere of radius `R`. What is the smallest horizontal velocity `v` that should fbe given to the disc for it to leave the hemisphere and not slide down it?[There is no friction]

A

`v = sqrt(2 g R)`

B

`v = sqrt(g R)`

C

`v = (g)/(R)`

D

`v = sqrt(g^(2) R)`

Text Solution

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The correct Answer is:
B
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