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A small ball is pushed from a height h a...

A small ball is pushed from a height h along a smooth hemispherical bowl of rodius R. With what speed should the ball be pushed so that it just reaches the top of the opposite end of the bowl?

A

`sqrt(2gh)`

B

`sqrt(2gR)`

C

`sqrt(2g(R-h))`

D

`sqrt(2g(R+h))`

Text Solution

Verified by Experts

The correct Answer is:
C
`E_(i)=E_(f)implies(1)/(2)mv^(2)=mg(R-h)`
`impliesv=sqrt(2g(R-h))`
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