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Physics - Rotation Question with Solution | TestHub

PhysicsRotationMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

Moment of inertia of a uniform quarter disc of radius $R$ and mass $M$ about an axis through its centre of mass and perpendicular to its plane is

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Answer:

Solution:

Moment of Inertia of the object about $O$ is $\frac{{MR}^{2}}{2}$
By parallel axis theorem

$\frac{{MR}^{2}}{2} = I_{cm} + M {(\frac{4 R}{3 π} \sqrt{2})}^{2}$

$I_{cm} = \frac{{MR}^{2}}{2} - M {(\sqrt{2} \frac{4 R}{3 π})}^{2}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:RotationSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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