Recent content by Pironman

Right now I started with the first volume of the physics series of Lev D Landau, just because I already have it, I bought it some years ago but never readen.

First of all, thanks to everyone. Now I understand why use one or another form, so the main topic question is solved. I will look to the books you advised me. For a little bit more information, to better understand my problem, I'm mechanical engineer and I'm trying to write a mathematical model...

Good morning, I'm not a student but I'm curious about physics. I would like to calculate the equation of motion of a system using the Lagrangian mechanics. Suppose a particle subjected to some external forces. From Wikipedia, I found two method: 1. using kinetic energy and generalized forces...