Q.
A round object is rolling without sliding on a horizontal surface. If ratio of its translational energy to total energy is 2 : 3, then the object is a
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a
Thin spherical shell
b
Thin ring
c
Solid sphere
d
Solid disc
answer is D.
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Detailed Solution
12mV212mV2+12IC(VR)2=23⇒11+ICmR2=23⇒IC=12 mR2
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