The velocity of centre of mass of a disc rolling on an inclined plane changes from V to 2V at any instant of time. If M is the mass of disc then increases in its kinetic energy will be
Text Solution
Verified by ExpertsThe correct answer is:
A
Total KE = 
MV 2 + 
Ιω 2 = 
MV 2
Δ KE = 
M (4V 2 – V 2 ) = 
MV 2
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