The Science of Pendulums:
The pendulum model is an excellent example of simple harmonic motion.
The primary force acting on the system is angular acceleration,
which changes the angular velocity,
which changes the angle of the pendulum (relative to the center) as it swings/oscillates.
This module is designed to allow you to explore other factors that affect the
period of the pendulum model.
One good site to provide more information is
The Simple Pendulum
or check these sites out.
Back