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Question
Tue February 05, 2013 By:

# a solid sphere and a disc of equal radii are rolling on an inclined plane without slipping. one reaches earlier than the other due to different radius of gyration?? why the answer cannot be moment of inertia??

Wed February 06, 2013
Either the answer is : one reaches earlier than the other due to different radius of gyration
OR, moment of inertia (not only this)and mass.MOment of inertia and mass both are into radius of gyration.
acceleration of the object=a=

k=radius of gyration and I=mom of inertia
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