Q.

When a solid sphere is rolling without slipping on rough horizontal surface then the percentage of its total kinetic energy which is translational is 500m%. Find m =

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answer is 7.

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Detailed Solution

12mv212MK212+mv2×100

12mv212mv21k2R2+1×100

=R2K2+R2×100

=R225R2+R2×100

=57×100

=5007

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