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IEVref:113-03-22ID:
Language:enStatus: Standard
Term: angular momentum
Synonym1: moment of momentum
[Preferred]
Synonym2:
Synonym3:
Symbol: L
Definition: for a material point and a given origin point, axial vector quantity equal to the vector product of the position vector r and the momentum p, thus L = r × p

NOTE 1 For a continuous body, angular momentum is equal to the integral L = ∫ r × v dm = ∫ (r × v)ρ dV, where ρ is the mass density in an domain having quasi-infinitesimal mass dm and volume dV, position vector r, and velocity v. For a system of particles, it is equal to the sum of their angular momentums.

NOTE 2 A body with moment of inertia Jz with respect to an axis z and rotating with angular velocity ωz round that axis has angular momentum Lz = Jzωz.

NOTE 3 The coherent SI unit of angular momentum is kilogram metre squared per second, kg·m2/s.


Publication date:2011-04
Source:
Replaces:
Internal notes:2014-07-07: Symbol <i>L</i> corrected to <b><i>L</i></b>. JGO

2017-06-02: Cleanup - Remove Attached Image 113-03-22en.gif

2017-08-28: <b><i>r</b></i> corrected to <b><i>r</i></b>. LMO
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