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The translational kinetic energy of a collection of masses
is given by
where
is the total mass, and
denotes the speed of the
center-of-mass. We have
, where
is
the velocity of the center of mass.
More generally, the total energy of a collection of masses
(including distributed and/or rigidly interconnected point-masses) can
be expressed as the sum of the translational and
rotational kinetic energies [272, p.
98].
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