A ball rolls without slipping. The raidus of gyration of the ball about an axis passing through its centre of mass is K. If the raidus of ball be R, then the fraction of total energy associated with its rotational energy will be

Options

(a) K²/R²
(b) K²/(K²+R²)
(c) R²/(K²+R²)
(d) (K²+R²)/R²

Correct Answer:

K²/(K²+R²)

Explanation:

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