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Updated: May 6, 2025
In which statement we have two facts directly at variance: with M. Comte's doctrine; first, that the simpler science, statics, reached its present development only by the aid of the principle of virtual velocities, which belongs to the more complex science, dynamics; and that this "single principle" underlying all rational mechanics this most general form which includes alike the relations of statical, hydro-statical, and dynamical forces was reached so late as the time of Lagrange.
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