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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2019
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Q)

A disc of radius 2m and mass 100 kg rolls on a horizontal floor.Its center of mass has speed of $20\frac{cm}{s}$.How much work is needed to stop it?


( A ) 30KJ
( B ) 3J
( C ) 2J
( D ) 1J

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