The parallel axis theorem says that if the moment of inertia of a body rotating about the body's centre of mass is Icm, then the moment of inertia of the body rotating about an axis parallel to the original axis and displaced from it a distance d is IS=Icm+Md2, where M is the body's mass.
I know for a fact that this applies in cases of uniform density. Does this same theorem apply if the body's density is not uniform?
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