A particle rests on the top of a hemisphere of radius R. Find the smal – McqOptions

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1.	A particle rests on the top of a hemisphere of radius R. Find the smallest horizontal velocity that must be imparted to the particle if it is to leave the hemisphere without sliding down is
A.	\[\sqrt{gR}\]
B.	\[\sqrt{2gR}\]
C.	\[\sqrt{3gR}\]
D.	\[\sqrt{5gR}\]
Answer» B. \[\sqrt{2gR}\]

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