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Physics - Rotation Question with Solution | TestHub

PhysicsRotationCalculation of M.I.Medium2 minQB

PhysicsMediumsingle choice

Two concentric rings each of radius R and mass M are joined together such that their planes are perpendicular to each other as shown in figure. The moment of inertia of the system about the axis AA' is :-

Options:

Answer:

Solution:

AA' is a diameter of one ring

$I_{1} = \frac{M R ^{2}}{2}$

AA' is perpendicular to the plane of the other ring and passes through its centre

$I_{2} = M R^{2}$

$I = \frac{M R ^{2}}{2} + M R^{2} = \frac{3}{2} M R^{2}$

Answer: B

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

⏱ 2mℹ️ Source: QB

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