Object Moment of Inertia Comment Since all points of the hoop are equidistant from the axis, this one is easy. See below for the MOI of a disk.
This is related to the above by the Perpendicular Axis Theorem
See the derivation below for an annular ring.
See the derivation below for a rod through its center.
This is related to the above by the Parallel Axis Theorem See the derivation below for a shell.
See the derivation below for a sphere
See the derivation below for a slab
This is proven in the text. Suppose the MOI of an object of mass m for an axis passing through its center of mass (cm) is Icm. Then the moment of inertia for that object about an axis parallel to the original axis and a distance h from the original axis is given by:
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