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Physics - Rotation Question with Solution | TestHub

PhysicsRotationMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

If moment of inertia of disc about the diameter is given as $I$ , then the moment of inertia of the same disc about an axis perpendicular to its plane and passing through its rim is

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Answer:

Solution:

Moment of inertia of a disc about diameter is

$\frac{1}{4} {MR}^{2} = I$ (given)

$∴$ ${MR}^{2} = 4 I$

Now, required moment of inertia $= \frac{3}{2} {MR}^{2}$

$= \frac{3}{2} (4 I) = 6 I$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:RotationSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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