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A ball of mass m and radius r rolls insi...

A ball of mass `m` and radius `r` rolls inside a hemispherical shell of radius `R`. It is released from rest from point `A` as shown in figure. The angular velocity of centre of the ball in position `B` about the centre of the shell is.
.

A

`2sqrt(g/(5(R-r)))`

B

`sqrt((10g)/(7(R-r)))`

C

`sqrt((2g)/(5(R-r)))`

D

`sqrt((5g)/(2(R-r)))`

Text Solution

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The correct Answer is:
B
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