Hamiltonians and Lagrangians of non-autonomous one-dimensional mechanical systems

G.F. Torres del Castillo, I. Rubalcava García


It is shown that a given non-autonomous system of two first-order ordinary differential equations can be expressed in Hamiltonian form. The derivation presented here allows us to obtain previously known results such as the infinite number of Hamiltonians in the autonomous case and the Helmholtz condition for the existence of a Lagrangian.


Non-autonomous systems; Hamilton equations; Lagrangians

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Revista Mexicana de Física

ISSN: 2683-2224 (on line), 0035-001X (print)

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