Question: 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 it
(A) \sqrt{gR}
(B) \sqrt{2gR}
(C) \sqrt{3gR}
(D) \sqrt{5gR}
Answer: option (A)
Solution:
