Two identical uniform solid spheres are attached by a solid uniform thin rod, as shown in (Figure 1). The rod
lies on a line connecting the centers of mass of the two
spheres. The axes A, B, C, and D are in the plane of the
page (which also contains the centers of mass of the
spheres and the rod), while axes E and F (represented
by black dots) are perpendicular to the page.
Rank the moments of inertia of this object about the axes indicated.