Explore the application of Lagrange Multipliers to determine the force of constraint for a swinging pendulum in this 27-minute physics tutorial. Delve into the process of finding kinetic energy, deriving the Euler-Lagrange equation, and implementing a numerical solution. Learn how to use Python to solve the differential equation and perform a work-energy check. Follow along with the step-by-step explanation, including code examples and a comprehensive breakdown of the problem-solving approach. Gain valuable insights into advanced classical mechanics concepts and their practical implementation through computational methods.