A thin wire of length $\ell$ and mass $m$ is bent in the form of a semicircle as shown. Its moment of inertia about an axis joining its free ends will be ...........
A thin wire of length $\ell$ and mass $m$ is bent in the form of a semicircle as shown. Its moment of inertia about an axis joining its free ends will be ...........
- A
$m \ell^2$
- B
Zero
- C
$\frac{m \ell^2}{\pi^2}$
- D
$\frac{m \ell^2}{2 \pi^2}$
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