This applet illustrates coupled oscillations of a linear chain of identical noninteracting bodies connected to each other and to fixed endpoints by identical ideal springs. All bodies start from rest, and their initial positions can be set either by sliding them along the track

Mathematical Equations of Damped Harmonic Motion.

This site is devoted to consideration of harmonic motion in classical mechanics.

A series of graphical animations illustrating the features of this phenomenon, with online consolidation exercises.

This applet illustrates the simple plane pendulum, with or without damping. The user enters the damping coefficient and initial conditions, and the applet animates the pendulum's motion and plots the angular velocity versus the angle. Such a plot is called a phase portrait.