Derivation of Equation of motion from Euler-Lagrange Equation
7149
Calculus of variations -- how does it make sense to vary the position and the velocity independently?
126388
Derivation of Lorentz Transformations
99789
Beyond Hamiltonian and Lagrangian mechanics
89004
Where does the partial derivative come from in Sakurai's derivation of the momentum operator?
4989
Why are there only derivatives to the first order in the Lagrangian?
30992
How do you determine the Lagrangian?
74041
Derivation of polytropic process equation
3603
Lagrangian and Hamiltonian EOM with dissipative force
106667
Which equation to use for simple harmonic motion?
73660
Relativistic Doppler effect derivation
126142
Action principle, Lagrangian mechanics, Hamiltonian mechanics, and conservation laws when assuming Aristotelian mechanics $F=mv$
28935
Lagrangian of the Euler equations
1957
Derivation of Kepler's laws
28946
Derivation of Spin Lagrangian
23027
Deriving equations of motion using integration
117990
Derivation of the method of Lagrange multipliers?
20962
Derivation of Archimedes' principle