Why does science make roller coasters possible?

A roller coaster is a machine that uses gravity and inertia to send a train of cars along a winding track. The combination of gravity and inertia, along with g-forces and centripetal acceleration give the body certain sensations as the coaster moves up, down, and around the track.



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A roller coaster demonstrates kinetic energy and potential energy. A marble at the top of the track has potential energy. When the marble rolls down the track, the potential energy is transformed into kinetic energy. Real roller coasters use a motor to pull cars up a hill at the beginning of the ride.

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Most roller coasters run by the Law of Inertia. Since an object at rest stays at rest, all roller coasters have to be pushed or pulled to get started. The student's roller coaster started at the top of a big hill.

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The two most important forms for amusement park rides are kinetic energy and potential energy. In the absence of external forces such as air resistance and friction (two of many), the total amount of an object's energy remains constant.

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Basic mathematical subjects such as calculus help determine the height needed to allow the car to get up the next hill, the maximum speed, and the angles of ascent and descent. These calculations also help make sure that the roller coaster is safe. No doubt about it--math keeps you on track.

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Roller coasters are designed to run on two basic scientific principles: 1) gravity and 2) the transfer of energy. On Earth, gravity is the force that pulls objects toward the ground. The transfer of energy is what causes objects at rest to move and objects in motion to slow or stop.

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In roller coasters, the two forms of energy that are most important are gravitational potential energy and kinetic energy.

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A roller coaster demonstrates kinetic energy and potential energy. A marble at the top of the track has potential energy. When the marble rolls down the track, the potential energy is transformed into kinetic energy. Real roller coasters use a motor to pull cars up a hill at the beginning of the ride.

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Roller coaster engineering falls under the domain of the mechanical engineer. Mechanical engineers apply the principles of engineering, physics, and material science for the design, analysis, manufacturing, and maintenance of mechanical systems.

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14 Fun Facts About Roller Coasters
  • The American roller coaster was invented to save America from Satan. ...
  • One of the earliest coasters in America carried coal before it carried thrill seekers. ...
  • “Russian mountains” predated roller coasters—and Catherine the Great improved them. ...
  • Roller coaster loops are never circular.


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First, there are those long walks just to get on the roller coasters, then when you go on the thrill ride they're a good workout for your hearts and lungs. Roller coasters are good for stress relief, fighting phobias, and clearing your sinuses.

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Programmable logic controllers, usually three of them, monitor every aspect of a coaster's operations. They regulate the ride's speed, ensure that trains never come too close to one another, and alert human operators to technical glitches or track obstructions.

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At the bottom of the loop, gravity and the change in direction of the passenger's inertia from a downward vertical direction to one that is horizontal push the passenger into the seat, causing the passenger to once again feel very heavy.

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A roller coaster does not have an engine to generate energy. The climb up the first hill is accomplished by a lift or cable that pulls the train up. This builds up a supply of potential energy that will be used to go down the hill as the train is pulled by gravity.

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