inertial force

World English Dictionary
inertial force
 
n
See also Coriolis force an imaginary force which an accelerated observer postulates so that he can use the equations appropriate to an inertial observer

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American Heritage
Science Dictionary
inertial force   (ĭ-nûr'shəl)  Pronunciation Key 
An apparent force that appears to affect bodies within a non-inertial frame, but is absent from the point of view of an inertial frame. Centrifugal forces and Coriolis forces, both observed in rotating systems, are inertial forces. Inertial forces are proportional to the body's mass. See also General Relativity.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

inertial force

any force invoked by an observer to maintain the validity of Isaac Newton's second law of motion in a reference frame that is rotating or otherwise accelerating at a constant rate. For specific inertial forces, see centrifugal force; Coriolis force; d'Alembert's principle.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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