Physics - Rotation Question with Solution | TestHub
PhysicsRotationMiscellaneousMedium3 minQB
PhysicsMediumsingle choice
A uniform thin wire of length 3L and mass 3M is bent into the form of an equilateral triangle ABC as shown in figure. The moment of inertia of the system about the median AM is :-
Options:
Answer:
A
Solution:
Each side has mass M and length L.
The base contributes ML²/12 about the median.
Each inclined side contributes ML²/12 about the same axis.
Thus I=3(ML²/12)=ML²/4.
Stream:JEESubject:PhysicsTopic:RotationSubtopic:Miscellaneous
⏱ 3mℹ️ Source: QB
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