MotionGenesis: F=ma Software, textbooks, training, consulting.   1. Chaotic double-pendulum (Babyboot -- 3D motion)
Chaotic pendulum: Problem statement (.pdf)
Dynamics:   F = m a, Lagrange, Kane     Program responses
MotionGenesis Babyboot released from 45 degrees MotionGenesis Babyboot released from 90 degrees
MotionGenesis Babyboot schematic MotionGenesis Babyboot picture

More detailed information

2. Planar double-pendulum (2D forces & motion)
Double-pendulum problem statement (.pdf)
Statics: F = 0    M = 0,   Lagrange, Kane Program responses
Dynamics: F = m a   M = I 𝛂 Program responses
Dynamics: Kane (generalized speeds) Program responses
MotionGenesis Double pendulum

3. Pumping up a swing (2D with sitting rider)
Available later