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Physics - Rotation Question with Solution | TestHub

PhysicsRotationCalculation of M.I.Easy2 minQB

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Two uniform rods of equal length but different masses are rigidly joint to form an L-shaped body, which is then pivoted as shown. If in equilibrium, the body is in the shown configuration, ratio $\frac{M}{m}$ will be

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Answer:

Solution:

Net torque about O should be zero. Hence

$mg (\frac{l}{2} sin 60°) = Mg (\frac{l}{2} sin 30°)$

∴ $\frac{M}{m} = \frac{sin 60°}{sin 30°} = \sqrt{3}$

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

⏱ 2mℹ️ Source: QB

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