The Principle of Gravitational Potential Energy

The machine, the cables are lifting you from the ground level up to the high point. They're giving you what's called gravitational potential energy. And so when I look at any amusement park, I look for the roller coaster that has the highest spot. So I know that'll get me the highest speed. Plus you calculate. Get a physics friend to do this for you. You can calculate what speed is required for the cars to go completely upside down and not fall out of the circle. There's a speed. I mean, below a certain speed, you don't make it.