Question

When a ring of radius R is allowed to roll down an
Inclined plane without slipping and its velocity at the
bollorn of the plane is V. Ir the experiment is repealed
by using a disc of radius R. its velocity at the bottom of
the plane would be​

Answer 1

Explanation:

For ring applying directly work-energy theorem,

loss in gravitational potential energy = gain in rotational kinetic energy +gain in translational kinetic energy

mgh=21mV2+21mR2(RV)2

mgh=mV2

V=gh

For the block, Work Energy Theorem,

mgh=21mV12

V1=2gh

=2V

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