Question

A thin wire of length $l$ and mass $m$ is bent in the form of a semicircle. The moment of inertia about an axis perpendicular to its plane and passing through the end of the wire is

• A. $\frac{m{l}^2}{2}$
• B. $2m{l}^2$
• C. $\frac{m{l}^2}{{\pi }^2}$
• D. $\frac{m{l}^2}{2{\pi }^2}$

Answer 1

The correct option is D $\frac{m{l}^2}{2{\pi }^2}$