Parallel axis theorem
Theorem in planar dynamics / From Wikipedia, the free encyclopedia
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"Steiner's theorem" redirects here. Not to be confused with Steiner's theorem (geometry).
The parallel axis theorem, also known as Huygens–Steiner theorem, or just as Steiner's theorem,[1] named after Christiaan Huygens and Jakob Steiner, can be used to determine the moment of inertia or the second moment of area of a rigid body about any axis, given the body's moment of inertia about a parallel axis through the object's center of gravity and the perpendicular distance between the axes.