moment of inertia

(redirected from moments of inertia)
Also found in: Thesaurus, Encyclopedia.
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

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:
Noun1.moment of inertia - the tendency of a body to resist angular accelerationmoment of inertia - the tendency of a body to resist angular acceleration
inertia - (physics) the tendency of a body to maintain its state of rest or uniform motion unless acted upon by an external force
moment - a turning force produced by an object acting at a distance (or a measure of that force)
References in periodicals archive ?
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.
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.
On the basis of this first set of analyses, related to the distribution of fictitious moments of inertia corresponding to Case 1, both the wings clearly reach the instability conditions at sea level and at the cruise flight altitude.
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.
During the deployment of tether from the satellite, the moments of inertia of the satellite are greatly altered.
The moments of inertia of individual elements of the seeker have been calculated in relation to respective axes of the adopted systems of coordinates (Fig.
Knowing the masses, dimensions, and placement of all of the segments, determine the principle moments of inertia of the dancer in pirouette position ([I.
Preliminary estimation of airplane moments of inertia using CAD solid modeling.
dk] Study Main Method(s) Estimated Parameters 1955--Dempster Balance plate, Volume, mass, density, hydrostatic weighing center of mass and mass and period of moments of inertia oscillation 1964--Hanavan Mathematical model Center of mass and mass moments of inertia of entire body 1966--Drillis (Incremental) hydrostatic Volume, mass, center of and Contini weighing and balance mass and mass moments of plate inertia of the segments.