d'Alembert's principle

British

/ dalɑ̃bɛr /

noun

physics the principle that for a moving body the external forces are in equilibrium with the inertial forces; a generalization of Newton's third law of motion

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Etymology

Origin of d'Alembert's principle

C18: named after Jean Le Rond d'Alembert (1717–83), French mathematician, physicist, and rationalist philosopher

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