If a sphere is rolling, the ratio of its rotational energy to the total kinetic energy is given ...

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If a sphere is rolling, the ratio of its rotational energy to the total kinetic energy is given by
(1) 7 : 10
(2) \( 2: 5 \)
(3) \( 10: 5 \)
(4) \( 2: 7 \)
(W)
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