A mass m slips along the wall of a semispherical surface of radius R. – McqOptions

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1.	A mass m slips along the wall of a semispherical surface of radius R. The velocity at the bottom of the surface is [MP PMT 1993]
A.	\[\sqrt{Rg}\]
B.	\[\sqrt{2Rg}\]
C.	\[2\sqrt{\pi Rg}\]
D.	\[\sqrt{\pi Rg}\]
Answer» C. \[2\sqrt{\pi Rg}\]

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