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

Question:

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

Options :

a) K^2/R^2
b) K^2/K^2 + R^2
c) R^2/K^2 + R^2
d) K^2 + R^2/R^2

Answer :

b) K^2/K^2 + R^2

Answer Steps :

Solution :-

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If current in an electric bulb changes by 1%, then the power will change by (a) 1%(b) 2%1000 OF(c) 4% anda darse(d) =%2

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