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Physics - Rotation Question with Solution | TestHub

PhysicsRotationMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

A diatomic molecule is formed by two atoms which may be treated as mass points $m_{1}$ and $m_{2}$ joined by a massless rod of length $r$ . Then the moment of inertia of molecule about an axis passing through centre of mass and perpendicular to the rod is

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Answer:

Solution:

With respect to centre of mass,

Effective mass $= \frac{m_{1} m_{2}}{m_{1} + m_{2}}$

$∴ I = [\frac{m_{1} m_{2}}{m_{1} + m_{2}}] r^{2}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:RotationSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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