Here are three different approaches to the same problem.

Here is the acceleration in polar coordinates
   • What is the acceleration vector in po...  

Introduction to Lagrangian mechanics
   • Introduction to Lagrangian Mechanics  

00:00 - Intro
00:57 - Newtonian Mechanics
08:12 - Lagrangian Mechanics
13:39 - Hamiltonian Mechanics
18:55 - Other problems and how to solve