d'Alembert's principle

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d'Alembert's principle

n
(General Physics) 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
[C18: named after Jean Le Rond d'Alembert (1717–83), French mathematician, physicist, and rationalist philosopher]
References in periodicals archive ?
According to D'Alembert principle, the force equilibrium equations of the vehicle's motion are as follows:
He describes such concepts as generalized coordinates, constraints, the D'Alembert principle, and Euler-Lagrange's and Hamilton's equations.
This yields the formulation of the d'Alembert principle, which states that a state of dynamic equilibrium exists if the virtual work for arbitrary virtual displacements vanishes.