# moment of inertia

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Related to moments of inertia: Parallel axis theorem, Principal moments of inertia

## moment of inertia

n. pl. moments of inertia
A measure of a body's resistance to angular acceleration, equal to:
a. The product of the mass of a particle and the square of its distance from an axis of rotation.
b. The sum of the products of each mass element of a body multiplied by the square of its distance from an axis.
c. The sum of the products of each element of an area multiplied by the square of its distance from a coplanar axis.

## moment of inertia

n
(General Physics) the tendency of a body to resist angular acceleration, expressed as the sum of the products of the mass of each particle in the body and the square of its perpendicular distance from the axis of rotation. Symbol: I
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

## mo′ment of iner′tia

n.
the sum of the products of the mass and the square of the perpendicular distance to the axis of rotation of each particle in a body rotating about an axis.
[1820–30]
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 moment of inertia - the tendency of a body to resist angular accelerationinertia - (physics) the tendency of a body to maintain its state of rest or uniform motion unless acted upon by an external forcemoment - a turning force produced by an object acting at a distance (or a measure of that force)
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
American student, Avinash Raju, said: "My experiment was based on intermediate moments of inertia. I tried several test objects at different lengths and heights as well as different masses."
The lighter crown and new X-Face with variable thickness have created weight savings that allowed Callaway engineers to gift the Rogue series with higher levels of moments of inertia than anything previously in Callaway's product line without a loss of performance.
In fact, the moments of inertia of a CubeSat are sometimes known with little accuracy, given the complicate and time-expensive procedure necessary for determining them.
In the following, the mass of the flywheel and clutch is symbolized by m, the moments of inertia of the flywheel and clutch about the X, Y and Z axes by Jx, Jy and Jz (Jy=Jz), and the distance from No.5 journal center to the center of gravity of the flywheel and clutch by D (hereinafter referred to as 'gravity center distance').
This means that the rotational frequencies of the two bands are very similar because the rotational frequency (dE/dI) is approximately half the transition energy, and also implies that the dynamical moments of inertia are almost equal.
The moments of inertia [sup.B][I.sub.rci] and [sup.B][I.sub.tci] are discussed in what follows.
He adds, "Utilizing ABB's superior motion control technology at high moments of inertia, the new robot automatically adapts and adjusts its speed to accommodate heavy and wide parts.
This experiment tested an autonomous, robotic method to identify unknown or changed inertia properties (mass, center of mass, moments of inertia) of a spacecraft.
RELATIONS TO THE VARIATIONS OF EARTH ROTATION AND PRINCIPAL MOMENTS OF INERTIA
A bespoke MATLAB program, based on Jensen's (1978) 'elliptical zone' method, was used to determine the segment masses, segment centre of mass positions relative to the segment endpoints, and moments of inertia about transverse, antero-posterior, and longitudinal axes of each segment from the digitised landmarks.
The topics include physics and measurement, inertia and Newton's second and third laws, blocks in trains and in contact, non-uniform circular motion, the work-energy theorem, systems of particles and center of mass, completely inelastic collisions, moments of inertia theorems, angular momentum, and gravitational effects and dynamics.

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