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Physics - Rotation Question with Solution | TestHub

PhysicsRotationAngular momentumMedium2 minPYQ_2009

PhysicsMediumsingle choice

The moments of inertia of two freely rotating bodies $A$ and $B$ are $I_{A}$ and $I_{B}$ respectively. $I_{A} > I_{B}$ and their angular momenta are equal. If $K_{A}$ and $K_{B}$ are their kinetic energies, then

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Solution:

Kinetic energy $E = \frac{L ^{2}}{2 I}$ If angular momenta are equal, then $E \propto \frac{1}{I}$ Kinetic energy $E = K$ (given in problem) $If I_{A} > I_{B} then K_{A} < K_{B}$

Stream:MHT_CETSubject:PhysicsTopic:RotationSubtopic:Angular momentum

⏱ 2mℹ️ Source: PYQ_2009

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