Calculate the ratio of the times taken by a uniform solid sphere and a disc of the same mass and...

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Calculate the ratio of the times taken by a uniform solid sphere and a disc of the same mass and the same diameter to roll down through the same distance from rest on a inclined plane.
(1) \( 15: 14 \)
(2) \( \sqrt{15}: \sqrt{14} \)
(3) \( 15^{2}: 14^{2} \)
(4) \( \sqrt{14}: \sqrt{15} \)
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