Hello, you have come here looking for the meaning of the word
moment of inertia. In DICTIOUS you will not only get to know all the dictionary meanings for the word
moment of inertia, but we will also tell you about its etymology, its characteristics and you will know how to say
moment of inertia in singular and plural. Everything you need to know about the word
moment of inertia you have here. The definition of the word
moment of inertia will help you to be more precise and correct when speaking or writing your texts. Knowing the definition of
moment of inertia, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.
English
Noun
moment of inertia (plural moments of inertia)
- (physics, classical mechanics) A measure of a rigid body's resistance to change in its angular velocity around a given axis.
1882, Edward John Routh, The Elementary Part of a Treatise on the Dynamics of a System of Rigid Bodies, 4th edition, MacMillan & Co., page 10:The moments of inertia of a heterogeneous body whose boundary is a surface of uniform density may sometimes be found by the method of differentiation.
1884, Benjamin Williamson, An Elementary Treatise on the Integral Calculus, 4th edition, Appleton and Company, page 292:Consequently, the moment of inertia of a body relative to any axis can be found when that for the parallel axis through its centre of gravity is known.
- (engineering, structural engineering) Second moment of area; a measure of a rigid body's resistance to bending.
2007, Robert L. Mott, Applied Strength of Materials, 5th edition, Taylor & Francis (CRC Press), page 323:Stresses due to vertical shearing forces also depend on moment of inertia and are discussed in Chapter 8.
Some mathematicians and stress analysts use the term second moment of area instead of moment of inertia. That term is, in fact, more descriptive of the definition of this property in the following discussion.
Synonyms
Derived terms
Related terms
Translations
measure of resistance to change in angular velocity
See also
Further reading