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  1. What is the difference between Newtonian and Lagrangian mechanics …

    Lagrangian formulation is what you obtain when you consider systems that are defined on "curved spaces" (in a sense that I won't make precise, but think e.g. about pendulum constrained to a circle). …

  2. The origin of the Lagrangian - Physics Stack Exchange

    Oct 12, 2020 · Is it possible to explain the form of Lagrangian L = T − V L = T V and action principle in the following way? The force that acts on a mass particle is due to the potential V(x) V (x). This force …

  3. What is the physical meaning of the action in Lagrangian mechanics?

    The Hamiltonian H and Lagrangian L which are rather abstract constructions in classical mechanics get a very simple interpretation in relativistic quantum mechanics. Both are proportional to the number of …

  4. Why is the Lagrangian defined as - Physics Stack Exchange

    0 The Lagrangian isn't defined as T − V T V, it just turns out that way in a lot of situations. The electromagnetic Lagrangian, for example, is not T − V T V. The Shankar quantum mechanics book …

  5. newtonian mechanics - Motivation for form $L = T - V$ of Lagrangian ...

    Jan 13, 2022 · The Lagrangian for the system is whatever happens to give the right equations of motion when you apply the Euler-Lagrange equations, and for systems with conservative forces that is T − V …

  6. What makes a Lagrangian a Lagrangian? - Physics Stack Exchange

    The Lagrangian is one implementation of an underlying geometry, called a "symplectic" geometry that connects kinematic variables with their conjugate dynamic variables, in the description of dynamics …

  7. Physical meaning of the Lagrangian function [duplicate]

    In Lagrangian mechanics, the function L = T − V L = T − V, called Lagrangian, is introduced, where T T is the kinetic energy and V V the potential one. I was wondering: is there any reason for this quantity …

  8. How is Lagrangian Mechanics useful? - Physics Stack Exchange

    Aug 20, 2020 · Also can Lagrangian be used to solve any of the problems out there in mechanics easily? very much so. Go to the problems section of your textbook on the Lagrangian Mechanics …

  9. Connection between different kinds of "Lagrangian"

    Mar 21, 2021 · The Lagrangian develops a very intuitive meaning within the action principle (aka Hamilton's principle). Without further, accompanying interpretation, of which there are many (e.g. …

  10. Momentum in Lagrangian mechanics - Physics Stack Exchange

    Apr 11, 2021 · In the context of translation symmetry for lagrangian mechanics i was given this statement: For a mechanical system $\frac {∂L} {∂\dot {q}_i}=p_i$ is the momentum. I have no idea …