Parallel Axis Theorem
The moment of inertia of any object about an axis through its center of mass is the minimum moment of inertia for an axis in that direction in space. The moment of inertia about any axis parallel to that axis through the center of mass is given by
The expression added to the center of mass
moment of inertia will be recognized as the
moment of inertia of a point mass  the moment
of inertia about a parallel axis is the center of
mass moment plus the moment of inertia of the
entire object treated as a point mass at the
center of mass.



Index
Moment of inertia concepts 