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en.wikipedia.org/wiki/Parallel_axis_theorem

The parallel axis theorem, also known as Huygens–Steiner theorem, or just as Steiner's theorem, named after Christiaan Huygens and Jakob Steiner, can be used to determine the mass 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 be...

www.chegg.com/.../definitions/parallel-axis-theorem-5

The application of parallel axis theorem for the rotation axis offset from the center of mass is depicted in the figure below. According to parallel axis theorem, moment of inertia is the sum of moment of inertia through mass center and product of mass and square of perpendicular distance between mass center and rotation axis.

medical-dictionary.thefreedictionary.com/parallel+axis+theorem

parallel axis theorem mathematical method of relating the moment of inertia of a body or object around one axis to the moment of inertia of the same body or object around a parallel axis. Calculated as I 2 = I 1 + md 2 where I 1 and I 2 are the moments of inertia, m is the mass of the object and d is the distance between the two parallel axes.

thesciencedictionary.org/parallel-axis-theorem

A theorem expressing the moment of inertia / of a body about any axis, in terms of its moment of inertia, /a about a parallel axis through G, its centre of gravity. Thus I-Ia+AId2, where d is the perpen

encyclopedia2.thefreedictionary.com/parallel+axis+theorem

A theorem which states that the moment of inertia of a body about any given axis is the moment of inertia about a parallel axis through the center of mass, plus the moment of inertia that the body would have about the given axis if all the mass of the body were located at the center of mass.

en.wikipedia.org/wiki/Second_moment_of_area

It is sometimes necessary to calculate the second moment of area of a shape with respect to an ′ axis different to the centroidal axis of the shape. However, it is often easier to derive the second moment of area with respect to its centroidal axis, , and use the parallel axis theorem to derive the second moment of area with respect to the ′ axis.

byjus.com/physics/parallel-perpendicular-axes-theorem

Parallel axis theorem and perpendicular axis theorem are used to solve problems on moment of inertia, let us discuss the two theorems, Parallel axis theorem states that, the moment of inertia of I of a body about any axes is same as the moment of inertia I G about an axis parallel to the body passing through its center of gravity plus Mb 2, where M is the mass of that body and b is the ...

www.quora.com/What-is-the-parallel-axis-theorem

The Parallel Axis Theorem states that a bodies moment of inertia about any given axis is the moment of inertia about the centroid plus the mass of the body times the distance between the point and the centroid squared. This works for both mass and area moments of inertia as well as for both rectangular and polar moments of inertia.

hyperphysics.phy-astr.gsu.edu/hbase/parax.html

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

notendur.hi.is/.../masteringphysics/9_10/parallelaxis.htm

However, in many problems the axis of rotation does not pass through the center of mass. Does that mean that one has to go through the lengthy process of finding the moment of inertia from scratch? It turns out that in many cases, calculating the moment of inertia can be done rather easily if one uses the parallel-axis theorem.