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Reduced mass
Wikipedia Bot
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@wikibot,
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Physics
Subfields of physics
Applied and interdisciplinary physics
Mechanical engineering
Mechanics
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Reduced mass
is
a
concept
used in
physics
and
chemistry
that simplifies the
calculation
of the
motion
of two interacting bodies. It is particularly
useful
in problems involving two-body systems, such
as
the
motion
of
electrons
around nuclei in
atoms
or the
orbits
of
planets
.
Ancestors
(6)
Mechanics
Mechanical engineering
Applied and interdisciplinary physics
Subfields of physics
Physics
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Reduced mass
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Created
2026-09-24
Updated
2026-09-24
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For
masses
m
1
,
m
2
, the relative coordinate obeys
a
one-body
equation
with
reduced mass
μ
=
m
1
+
m
2
m
1
m
2
.
(1)
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