Easy
Two rods each of mass $m$ and length $\ell$ are joined at their centers to form a cross. What is the moment of inertia of the cross about an axis passing through the common center and perpendicular to the plane formed by them?
- A$\frac{m\ell^2}{12}$
- B$\frac{m\ell^2}{6}$
- C$\frac{m\ell^2}{3}$
- D$\frac{m\ell^2}{2}$
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