Adjustable Catapult Phyics Experiment

This is a 129x106x116 catapult. It has holes in it to adjust the angle at which it starts on the arm and holes to adjust the angle at which it releases its payload. The cup has dimensions of 30x30x15 mm. I have included a payload to use. Due to technical difficulties, (my printer broke), I was unable to print and show off this Thing.