What are classical, theoretical, Lagrangian, and Hamiltonian mechanics? Is it useful to know them as a mechanical engineer? - Quora

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Answer (1 of 4): Classical mechanics usually refers to the mechanics of macroscopic objects i.e. anything that does not require a quantum description. It sometimes refers also to Newtonian mechanics which relies on forces to describe the systems it studies. Namely the central tennants are Newton'

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What are classical, theoretical, Lagrangian, and Hamiltonian mechanics? Is it useful to know them as a mechanical engineer? - Quora

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Hamiltonian Mechanics - Wikipedia PDF, PDF, Hamiltonian Mechanics

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