A metal sphere of radius 
and specific heat 
is rotated about an axis passing through its center at a speed of 
rotations per second. It is suddenly stopped and 
of its energy is used in increasing its temperature. Then the rise in temperature of the sphere is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Rotational kinetic energy of the sphere
where 
Since half of the KE is converted into heat,
M.S. 
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