A particle is projected with velocity u horizontally from the top of a smooth sphere of radius a so that it slides down the outside of the sphere. If the particle leaves the sphere when it has fallen a height 
, the value of 
is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Let the particle leaves the sphere at point P, so N 
0 at P
From geometry 
By work energy theorem
mg 
mg 
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