Dynamics of a Spring-Pendulum System
Dynamics of a Spring-Pendulum System
A string of fixed length is free to move over two frictionless rollers fixed at the top. A spring is at one end of the string and a bob is at the other end, forming a pendulum of variable length.
This Demonstration lets you explore the dynamics of this system by changing its parameters or initial conditions.
The chart at the top shows the conservation of energy in the system, which is utilized in the Lagrangian method to solve for the equations of motion.