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cen'ter of mass'

Mech.
the point at which the entire mass of a body may be considered concentrated for some purposes; formally, the point such that the first moment of a physical or geometric object about every line through the point is zero. Cf. moment (def. 8).

center of gravity

center of percussion

See also:

center of mass (Thesaurus)
center of mass (Encyclopedia)

Dictionary

cen'ter of mass'

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