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Physics of Roller Coasters Essay

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Roller coasters are driven almost entirely by inertial, gravitational and centripetal forces. Amusement parks keep building faster and more complex roller coasters, but the fundamental principles at work remain the same.

A roller coaster is like train. It consists of a series of connected cars that move on tracks. But unlike a passenger train, a roller coaster has no engine or power source of its own. For most of the ride, a roller coaster is moved only by the forces of inertia and gravity. The only exertion of energy occurs at the very beginning of the ride, when the cars are pulled up the first hill, or the "lift hill".

The purpose of this first climb is to build up potential energy. The concept of …show more content…

If the track slopes down, gravity pulls the front of the car toward the ground, so it accelerates. If the track tilts up, gravity applies a downward force on the back of the coaster, so it decelerates.

The track begins with a steep climp, building up potential energy in the coaster car. The rest of the track's hills, valleys, twists and turns are to change the built-up energy back and forth between potential energy and kinetic energy. As the train moves, it gradually loses energy to friction until it reaches the end of the ride.

There are two major types of roller coasters, which are defined by what their tracks are made out of: wooden and tubular steel. The tracks of wooden roller coasters are a little like traditional railroad tracks. The metal wheels of the cars roll on a flat metal strip, about 4 to 6 inches across. This strip is bolted to a running track made out of laminated wood. In most coasters, the car wheels have the same flanged design as the wheels of a train (the inner part of the wheel has a wide lip that keeps the car from rolling off the side of the track). The car also has another set of wheels that runs underneath the track. This keeps the cars from flying up into the air.

Wooden coaster tracks are braced by wooden crossties and diagonal support beams. The whole track structure is supported by wooden or steel beams However, since the track and support structure are so

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