IEC 60050 - International Electrotechnical Vocabulary


IEVref:	113-03-12	ID:
Language:	en	Status: Standard

Term:	centre of mass
Synonym1:	centre of gravity (deprecated) [Preferred]
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Definition:	for a continuous body in a domain D, with mass density ρ(r), point with position vector $r_{G} = \frac{\int_{D} r ρ d V}{\int_{D} ρ d V}$ NOTE 1 For a system of particles with masses m_i and position vectors r_i, the centre of mass is the point with position vector $r_{G} = \frac{\sum_{i} m_{i} r_{i}}{\sum_{i} m_{i}}$ . NOTE 2 In non-relativistic physics, the centre of mass doesn’t depend on the chosen reference frame.
Publication date:	2011-04
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Internal notes:	2017-06-02: Cleanup - Remove Attached Image 113-03-12en.gif
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