Moment of Inertia:
Here are some formulae for Moments of Inertia of different objects. (M stands for mass, R for radius and L for length):
Disk with axis parallel to disc, passing through the center
\[MR^2/2 \]
Disk with axis passing through the center and perpendicular to disc
\[MR^2/2 \]
Thin rod with axis perpendicular to the Rod and passing through center
\[ML^2/12 \]
Solid Sphere axis passing through the center
\[2MR^2/5 \]
Solid Shell with axis passing through the center
\[2MR^2/3 \]
