Derivation of Euler-Lagrange equations from Newton's second law
18054
Is there a proof from the first principle that the Lagrangian L = T - V?
77253
Proof of Lagrange Identity
51644
Differential Equations for Physicists
47638
Mass and Newton's Second Law
10785
Form of the Classical EM Lagrangian
96880
How to obtain Hamiltonian formalism and phase space for Lagrangian with second-derivatives?
53798
The relation between acceleration and inertial force
81967
Second law of Newton for variable mass systems
17414
Lagrangian of an effective potential
126388
Derivation of Lorentz Transformations
63402
Euler-Lagrange equation in curved spacetime: how to calculate $\partial \mathcal{L}/\partial(\nabla_\nu A_\mu)$?
117990
Derivation of the method of Lagrange multipliers?
42384
Сanonical form of a quadratic form by Lagrange's method
11358
Eigenvalues of the Lagrangian?
64674
Intuitive explanation of the inverse square power $\frac{1}{r^2}$ in Newton's law of gravity
23027
Deriving equations of motion using integration
27296
Derivation of Lagrangian of electromagnetic field from Lorentz force