Rotational Motion

Two identical solid spheres each of mass \(2 \mathrm{~kg}\) and radii \(10 \mathrm{~cm}\) are fixed at the ends of a light rod. The separation between the centres of the spheres is \(40 \mathrm{~cm}\). The moment of inertia of the system about an axis perpendicular to the rod passing through its middle point is __________ \(\times 10^{-3} \mathrm{~kg}~\mathrm{m}^{2}\)