Laws Of Motion Question 341

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 is

Options:

A) gR

B) 2gR

C) 3gR

D) 5gR

Show Answer

Answer:

Correct Answer: A

Solution:

[a] The velocity should be such that the centripetal acceleration is equal to the acceleration due to gravity v2R=g Or v=gR.



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