The kinetic energy of a rotating body depends upon ____________.

Distribution of mass only

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Angular speed only

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Distribution of mass and angular speed

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Angular acceleration only

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Solution

The correct option is D Distribution of mass and angular speed
The kinetic energy of a rotating body is given as
$K = \frac{1}{2} I ω^{2}$
The moment of inertia, $I$ depends upon the distribution of mass.
Hence the kinetic energy depends upon both distribution of mass and angular speed.

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