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IEVref: | 113-03-22 | ID: | |

Language: | en | Status: 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 and the momentum r, thus p = L × rpNOTE 1 For a continuous body, angular momentum is equal to the integral × rv dm = ∫ ( × rv)ρ dV, where ρ is the mass density in an domain having quasi-infinitesimal mass dm and volume dV, position vector , and velocity r. For a system of particles, it is equal to the sum of their angular momentums. vNOTE 2 A body with moment of inertia NOTE 3 The coherent SI unit of angular momentum is kilogram metre squared per second, kg·m | ||

Publication date: | 2011-04 | ||

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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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NOTE 1 For a continuous body, angular momentum is equal to the integral ** L** = ∫

NOTE 2 A body with moment of inertia *J*_{z} with respect to an axis *z* and rotating with angular velocity *ω*_{z} round that axis has angular momentum *L*_{z} = *J*_{z}*ω*_{z}.

NOTE 3 The coherent SI unit of angular momentum is kilogram metre squared per second, kg·m^{2}/s.