Physics - Rotation Question with Solution | TestHub

PhysicsRotationMiscellaneousMedium2 minQB
PhysicsMediumsingle choice

The moment of inertia of a thin square sheet of mass M and side a about the specified axis is:

Capture.PNG

Options:

Answer:
A
Solution:

The shown axis is parallel to a diagonal of the square and passes through a corner.

 

 

Moment of inertia about the parallel central diagonal is Ma²/12.

 

 

The separation is a/√2.

 

 

Thus I=Ma²/12+M(a²/2)=7Ma²/12.

Stream:JEESubject:PhysicsTopic:RotationSubtopic:Miscellaneous
⏱ 2mℹ️ Source: QB

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