How do roller coasters make loops and corkscrews? How does the chain work on a roller coaster?
The following article appeared in the December 28, 2014 edition of the Binghamton Press & Sun Bulletin: http://www.pressconnects.com/story/news/local/2014/12/26/gravity-roller-coasters-send-soaring/20915017/
School: Glenwood Elementary School, Vestal
Teacher: Miss Brigham
Hobbies/Interests: Riding roller coasters and water slides, playing hockey
Career Interest: Engineer that designs roller coasters
Answered by: Lee A. Cummings
Subject Librarian for Engineering, Binghamton University
Research area: Information literacy, library collections and Reference Services
Hobbies/Interests: Reading, Pop Culture, Martial Arts
If you’ve been to Disneyland, Busch Gardens or a Six Flags theme park (or even if you’ve just seen their commercials on TV), then you know how impressive roller coasters can be. They can be hundreds of feet tall, taller even than the tallest building in downtown Binghamton. And they can reach speeds well over 100 miles per hour. They may seem scary, but they are very safe and can be lots of fun.
Once the train makes it down the first hill, its momentum – the energy built up from speeding down the first hill – keeps it moving forward. The train is able to make loops and corkscrews thanks to this momentum. Loops and corkscrews on a roller coaster are designed by engineers as part of the entire construction of the track. Roller coaster tracks are built in sections (straight and curved), and then welded and bolted into one long track at the amusement park. Safety wheels attached to each of the cars keep them on the track as they make loops. The train’s momentum carries it through the entire loop, or series of loops and corkscrews. And centripetal force, the force that keeps objects moving in a circular path, keeps the riders pressed safely into their seats during the loop. Of course, safety restraints, like belts and over-shoulder bars, are there to provide extra support for every rider.
After all of the drops and loops in a roller coaster are made, a section of track much lower than the first drop helps the train of cars to slow down. The roller coaster operators then use brakes to bring the ride to a stop.
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