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Physics - Rotation Question with Solution | TestHub

PhysicsRotationCalculation of M.I.Medium2 minPYQ_2004

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The ratio of the radii of gyration of a circular disc about a tangential axis in the plane of the disc and of a circular ring of the same radius about a tangential axis in the plane of the ring is:NEET 2004

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Solution:

The radius of gyration of disc about a tangential axis in the plane of disc is $k_{1}$ $∴ k_{1} = \frac{5}{2} R$ And radius of gyration of circular ring of same radius about tangential axis is given by: $k_{2} ∴ \frac{k _{1}}{k _{2}} = \frac{3}{2} R = \frac{5}{2} R \times \frac{2}{3 R} = \frac{5}{6}$

Stream:NEETSubject:PhysicsTopic:RotationSubtopic:Calculation of M.I.

⏱ 2mℹ️ Source: PYQ_2004

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