angular momentum


Definition of angular momentum

: a vector quantity that is a measure of the rotational momentum of a rotating body or system, that is equal in classical physics to the product of the angular velocity of the body or system and its moment of inertia with respect to the rotation axis, and that is directed along the rotation axis

Examples of angular momentum in a Sentence

Recent Examples on the Web So arm swing isn’t the only way of balancing angular momentum, but it’s the simplest and most obvious one. Alex Hutchinson, Outside Online, 18 Apr. 2022 The standard answer is that arm swing counteracts the angular momentum—that is, the body’s twisting back and forth—produced by the motion of the legs. Alex Hutchinson, Outside Online, 18 Apr. 2022 The ball’s initial position, its kinetic energy, its angular momentum – and all the other factors: the friction acting on the ball, the ricketiness of the table, the crookedness of the house. Katie Hafner, Scientific American, 31 Mar. 2022 The first element a skater must control is angular momentum. Allison Goldstein, Popular Mechanics, 4 Feb. 2022 With a push in the opposite direction, the angular momentum decreases. Rhett Allain, Wired, 24 Sep. 2021 This suggests that the tail played an important role in controlling angular momentum, or the momentum of a rotating object. Yasemin Saplakoglu, Scientific American, 22 Sep. 2021 Other conservation laws apply to angular momentum and charge. John Horgan, Scientific American, 27 Sep. 2021 That means that her angular momentum must remain constant. Rhett Allain, Wired, 26 July 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'angular momentum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of angular momentum

1817, in the meaning defined above

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Time Traveler for angular momentum

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The first known use of angular momentum was in 1817

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Dictionary Entries Near angular momentum

angular milling

angular momentum

angular motion

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Statistics for angular momentum

Last Updated

11 May 2022

Cite this Entry

“Angular momentum.” Dictionary, Merriam-Webster, Accessed 17 May. 2022.

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