Brachistochrone Curve Demonstration

The Brachistochrone Curve is the fastest possible path a ball can take when falling between two points.
This is a customizable demonstration tool that allows you to compare three different paths by simultaneously rolling three similar balls at the same time. You can customize your print to the size of your marble or ball bearing (it is set up for an 10mm diameter ball bearing).

Also make sure you download the release mechanism if you are using the 3 slide demonstration. This should make it easier to release all three balls at once.