First slide

Moment of intertia

Question

For the uniform T shaped structure with mass 3M, moment of inertia about an axis normal to the plane and passing through O would be

Moderate

A

$\frac{2}{3} M l^{2}$
B

$M l^{2}$
C

$\frac{M l^{2}}{3}$
D

None of these

Solution

Moment of inertia, $I = 3 [\frac{M l^{2}}{3}] = M l^{2}$

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