This is a fun project where I get to build a rollercoaster out of foam pipe insulation. The point of this project is to see how high of a drop is required for a marble to loop the loop. I will try testing the drop at different heights. I plan to race 10 marbles down the drop at each height and see how many successfully loop the loop. The loop will need to be a fixed diameter (my diameter is 1 ft.). The purpose of the experiment is to find the lowest possible height that lets ALL of the marbles pass.