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When discussing the different formulations of classical mechanics, those that are always mentioned are Newtonian, Lagrangian and Hamiltonian mechanics. However, it is my understanding that when dealing with conservative forces in Newtonian mechanics, we choose to work with energy instead of forces because it makes things easier. Isn't this energy approach a seperate formulation of classical mechanics just as much as Lagrangian and Hamiltonian mechanics?

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# Energy formulation of classical mechanics?

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