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fictitious force

noun, Physics.
1.
any force that is postulated to account for apparent deviations from Newton's laws of motion appearing in an accelerated reference system.
Also called pseudo force.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Encyclopedia Article for fictitious 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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