Physics - Rotation Question with Solution | TestHub
PhysicsRotationMiscellaneousMedium3 minQB
PhysicsMediumsingle choice
A uniform circular disc has a moment of inertia I and radius of gyration K about an axis perpendicular to the disc and passing through its centre. A smaller concentric disc is taken out from this bigger disc. As a result of which moment of inertia and radius of gyration of the resulting body about the same axis
Options:
Answer:
C
Solution:
Removing the inner disc decreases the total moment of inertia.
The remaining annulus has , so its radius of gyration increases.
Stream:JEESubject:PhysicsTopic:RotationSubtopic:Miscellaneous
⏱ 3mℹ️ Source: QB
Doubts & Discussion
Loading discussions...
