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[" A sphere of mass "0.5kg" and diameter "],[1m" rolls without sliding with a constant "],[" velocity of "5m/s" .calculate what is the "],[" ratio of the rotational "K" .E to the total "],[" kinetic energy of the sphere "],[[" (a) "7/10," (b) "5/7],[" (c) "2/7," (d) "1/2]]

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