Personal Project Double Pendulum Simulation.
javac -cp . DoublePendulum.java
java -cp . DoublePendulum
click on the screen within the pendulum's range to move the pendulum there
the graph at the bottom is a plot of the accelerations of each of the bobs.
I used the equation of motion in https://web.mit.edu/jorloff/www/chaosTalk/double-pendulum/double-pendulum-en.html