Question

What will be the expression for moment of inertia of a rectangular lamina (ABCD having length $l$ and breadth b) about an axis passing through one of its corners and perpendicular to its plane?

• A. $I=\frac{M}{12}(l^2+b^2)$
• B. $I=M(\frac{l^2}{12}+\frac{b^2}{6})$
• C. $I=M(\frac{l^2}{6}+\frac{b^2}{12})$
• D. $I=\frac{M}{3}(l^2+b^2)$

Answer 1

Answer: (D)

$I=\frac{M}{3}(l^2+b^2)$

Answer 2

The correct option is (D)