Q.
In a metallic triangular sheet $ABC,AB = BC = 1$. If $M$ is its moment of inertia about $AC$.
A) $\frac{Ml^{2}}{4}$
B) $\frac{Ml^{2}}{12}$
C) $\frac{Ml^{2}}{6}$
D) $\frac{Ml^{2}}{18}$
Explanation
(b) Moment of inertia of triangle sheet $ABC$ about $AC = \frac{1}{2}$ moment of inertia of square $ABCD$ about $ABC$
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$\frac{1}{2}(2M)\frac{l^{2}}{12} = \frac{Ml^{2}}{12}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.