Question

The moment of inertia of a rectangular plate of mass $M$, length $L$ and breadth $B$, about an axis passing through its centre and perpendicular to its plane is________

• A. $\frac{M(L+B)}{12}$
• B. $\frac{M\left(L^{2}\right)}{12}$
• C. $\frac{M\left(L^{2}+B^{2}\right)}{12}$
• D. $\frac{M\left(B^{2}\right)}{12}$

Answer 1

Answer: (C)

The moment of inertia of rectangular plate of mass $M$, length $L$ and breadth $B$ is given as
$I=\frac{M\left(L^{2}+B^{2}\right)}{12}$