Adjustable Pendulum Arm

This pendulum arm was made for my AP Physics C class in order to experiment with the effects of mass and pendulum length on the chaotic behavior of a double pendulum system.

Assembly:
1) Print two copies of top and bottom pendulum halves, at least four snap pins (printing extras are recommended as they are fragile), a pendulum connector, and three inner bearing pieces (printing extras is recommended). 50% to 100% infill recommend, 15% infill normally leads to cracks in the bearing holes.