Dynamics of Physical Systems. Instructor: Prof. S. Banerjee, Department of Electrical Engineering, IIT Kharagpur. This course covers lessons on newton's method and constraints, derivation of the Lagrangian equation, bond graph approach, vector field around equilibrium points, high dimensional linear systems and dynamics of nonlinear systems.
One of the important elements of the engineering practice is to be able to predict the behavior of the system that we design. For example, if we design a circuit, we should be able to predict how it will perform, how it will behave under certain circumstances. If we are designing a mechanical system, we should be able to do that. And that is generally done by forming a mathematical model of the system, applying different types of inputs and seeing its performance.
(from nptel.ac.in)
Lecture 06 - Using the Lagrangian Equation to Obtain Differential Equations, Part III