Variational principles in mechanics
The basic statements of dynamics, which are Newton’s axioms and D’Alembert’s principle, allows us to formulate the laws of motion in the form of differential equations of motion. However they do not exhaust all the ways of representing the laws governing the motion of material bodies. An alternative is variational statements dealing with the stationary properties of certain values and enabling the complete replacement of the above statements.
KeywordsVariational Principle True Path Neighbouring Path Kinematic Element Supporting Trajectory
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