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Physics - Rotation Question with Solution | TestHub

PhysicsRotationCalculation of M.I.Medium2 minPYQ_2018

PhysicsMediumsingle choice

The moment of inertia of a thin uniform rod of length $L$ and mass $M$ about an axis passing through a point at a distance of $\frac{L}{3}$ from one of its ends and perpendicular to the rod is

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Answer:

Solution:

$I_{C M} = \frac{M L^{2}}{12}$ (about middle point)

Using parallel axis theorem.
$∴$ $I = I_{C M} + M x^{2}$
$= \frac{M L^{2}}{12} + M {(\frac{L}{6})}^{2}$
$I = \frac{M L^{2}}{9}$

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

⏱ 2mℹ️ Source: PYQ_2018

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