This project is a fairly realistic 1-sprite 1-script simulation of a double pendulum. Keep in mind, that it's more complex than just a simple pendulum attached to the end of another, because the two act on eachother, sometimes causing one to swing around a full circle and they don't have a predictable range of motion. This is called a chaotic system because even slight changes in the initial setup can cause large changes over time. Controls: Mouse: adjust top pendulum Mouse + Space: adjust lower pendulum renderLength: the rendered length of the rod (has no physical effect) renderDiameter: the rendered diameter of the weight (also has no physical effect) Please love it or comment! I know that it's not perfect, but it's pretty close to the realy thing. Thanks for watching! Updates: 12/22/2010 - Slight change made to formula calculating tension in the lower rod, as well as change in the formula for the lower pendulum's acceleration. This made it more realistic as it could swing more on its own.