A solid sphere of mass 1 kg rolls on a table with linear
speed 1 ms⁻¹. Its total kinetic energy is
(a) 1 J (b) 0.5 J
(c) 0.7 J (d) 1.4 J
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Explanation:
E=21Mv2+21Iω2
=21Mv2+21×52MR2×R2v2=107Mv2=0.7 J
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