
The Moment of Inertia for a Hollow Sphere can be taken to be made up of two stacks of infinitesimally thin, circular hoops, where the radius differs from `0` to `r` (or a single stack, where the radius differs from `-r` to `r`). The following formula is used: `I=(2mr^2)/3`, where:
The formula and equation for Moment of Inertia are from Wikipedia (https://en.wikipedia.org/wiki/List_of_moments_of_inertia).