How a Shopping Cart on a Ramp Becomes a Roller Coaster (Remake) #Engineering #RollerCoaster #HowItWorks #Science #learnontiktok

If you put a shopping cart at the top of a ramp, you have a roller coaster, but it's wheel swivel, so it wobbles and runs off the side. So you lay two steel rails and build a car that can only follow them. But the car can never climb higher than where it started, because friction steals a little speed on every foot it rolls. So the first hill is always the tallest, and a chain drags you up it. This is a lift hill. But if the chain snaps, you roll backwards. So a hook on the cart drops into a row of teeth beside the chain, and that clack clack clack on the way up is the hook catching every tooth. And over the top of the next hill, the cart wants to keep flying straight up. So wheels on top, wheels on the side, and wheels under the rail lock it on. And those wheels are made of plastic, not steel. So the ride stays quiet. But a round loop crushes you at the bottom. The first one's pushed 14G. So loops are shaped like a teardrop, tight at the top, and wide at the bottom. This is a clothoid loop. But at the end, you're still flying, so fins under the cart slide between magnets, which slow it down without touching it, and without any power, so they still work in a blackout. But before anyone rides it, somebody has to test it. So the first riders are dummies filled with water, about 170 pounds each, as heavy as a person. Add padded seats, lap bars that lock, and a camera on the big drop. Congratulations! You have built a roller coaster.