Physics · SYSTEMS OF PARTICLES AND ROTATIONAL MOTION
हिन्दीGiven below are two statements: Statement I: The kinetic energy of a body of moment of inertia \( I \) rotating with an angular velocity \( \omega \) about a fixed axis is given by \( K = \frac{1}{2} I \omega^2 \). Statement II: The moment of inertia of a rotating rigid body changes if its angular velocity is doubled. In the light of the above statements, choose the most appropriate answer from the options given below:
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Correct answer · Option C
Statement I is correct but Statement II is incorrect.
Explanation
Statement I is correct (\( K = \frac{1}{2} I \omega^2 \)), but Statement II is incorrect because moment of inertia is an intrinsic geometric property of the body independent of \( \omega \).