A solid spherical ball of mass m is released from the topmost point of the shown semi-spherical shell. The track is sufficiently rough to enable pure rolling motion. The normal force between the ball and the shell at the lowest position is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
mg
From the law of conservation of mechanical energy,
Final energy = Translational kinetic energy + Rotational kinetic energy
Hence, Final energy 
Hence, we finally obtain, 
.......(1)
and 
..........(2)
Solving Eqs. (1) and (2), we get
N= 
mg
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