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For questions involving the Lagrangian formulation of a dynamical system. Namely, the application of an action principle to a suitably chosen Lagrangian or Lagrangian Density in order to obtain the equations of motion of the system.
6
votes
2
answers
701
views
Contradiction between Lagrangian and Hamiltonian formalism
I am currently studying an introductory course to theoretical physics. I stumbled upon something I can't seem to understand, namely:
Suppose that we have a system without any potential energy, and thu …
1
vote
1
answer
249
views
Particles connected with spring, sliding over lines. Question about the potential energy
I'm currently studying small oscillations with the Lagrangian formalism. I stumbled upon an exercise that I can't seem to understand the method of solving it.
Two particles $P_1$ and $P_2$, with the …