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Jiyoung Yun

on 11 November 2013

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Transcript of Roller

The First Roller Coaster
The first roller coaster named
Switchback Railway
was invented in Coney Island, New York, on June 16th, 1884
Background Information
Top 10 Thrilling
Roller Coasters in the World
Park Name
Top Thrill
Cedar Point
Cedar Point
United States
United States
Roller Coaster
Six Flags
United States
Escape from
Six Flags
United States
Outlaw Run
Silver Dollar
United States
South Korea
427’ tall,120 mph and 400 ft drop
308” tall, 93 mph fast and 300 ft drop
308” tall, 93 mph fast and 300 ft drop
100 mph fast, 415’ tall and 328 ft drop
68 mph fast wooden coaster and 162 ft
dropping at angle of 81°
65 mph fast wooden coaster and 151 ft
dropping at angle of 77°
Six Flags
United States
72 mph fast and 255 ft drop at angle 85°
Heide Park
68 mph fast and 159 ft dropping
92 mph fast and 306 ft drops at 80°
62 mph fast steel coaster Drops at 121°
Top Three Roller Coasters in NJ
Park Name
Kingda Ka
Fly – The Great
Six Flags
the Great Adventure
Morey's Piers
Six Flags
the Great Adventure
456' tall and 128 mph fast
steel coaster. Drops at 90 degree
115' tall and 55 mph fast
steel coaster. Lots of loops
230’ tall and 80 mph in speed.
Drops at 68 degree angle
Coaster Construction
Coaster Physics
After Effects and Accidents
Wooden vs. Steel
Wooden Coaster
no loops
thin laminates of wood track
not as tall
not as fast
cheaper than steel coasters: ~ $10 million

Steel Coaster
tubular steel track
expensive than wooden coasters: ~ $25 million
Why Can't Wooden Coasters Do Inversions?
Wooden coasters can’t do inversions or loops, because wood is less durable than steel.
3 Roller Coasters in NJ
Kingda Ka
Fly – The Great Nor'easter
What is Roller Coaster Track Made of ?
Steel roller coaster runs on tubular steel rails. They are usually hollow, and the rails may be filled with sand or other dense material to help make the sound. Steel coasters have a steel support structure, but there are some coasters with steel rails that have wooden supports.

A wooden coaster runs on laminated wood with a steel strap on the top. The most common types of wood used are Douglas fir and southern yellow pine, because they accept the pressure treatment to make the wood more durable. Most wooden coasters have a wooden support structure, but it is possible to build a steel support structure and still use the wooden rails.

Different Types of Wheels
1. Friction Wheels - tires that are connected to the track of a roller coaster to
control the speed of the train. Friction Wheels are often used in
stations and brake runs (usually block-sectioned). On some
roller coasters, this same method is used on launches, or on lift

2. Upstop Wheels - A wheel attached to the train or car that rolls underneath
the track to keep the train from coming off.

3. Road Wheels - A wheel attached to the car or train that rides on the top of the roller coaster rail or track. These wheels are designed to keep the car from shifting to the left or right while traveling the roller coaster's track.
How do Roller Coasters Start and Stop?
Roller Coaster stops in low speed, because of friction, the force that opposes motion between two surfaces that are touching. The friction between the train and the tracks take the energy out of the system. As the energy in the system is reduced, the roller coaster begins to slow.
When the ride starts, the passengers will feel sudden force pushing them, because of momentum, which describes how strong the moving thing is. According to Newton’s law of motion, an object in motion will continue in motion along a straight line. Therefore, when the ride starts, the passengers will have momentum pushing them straight forward.

It begins to transform the energy from from gravitational potential energy to kinetic energy and from kinetic energy to gravitational potential energy. But each transfer of energy isn't complete because some of the energy is lost to heat and sound. Because of this lost energy, the roller coaster can't return to its original height after coasting downhill. With so little total energy left, the rolleccr coaster can't have much gravitational potential energy and must be much lower than the top of the first hill.
When the ride stops, the ride will gradually slow down. That is because of friction, the force that opposes motion between two surfaces that are touching. Friction effects roller coasters by slowing it down.The friction between the train and the tracks, plus the friction between the air and the train, take the energy out of the system. As the energy in the system is reduced, the roller coaster begins to slow. Therefore, because of the friction, the roller coaster slows down and stops at the end of the ride.

Centripetal Acceleration
Centripetal acceleration is the act of an object moving in a circular motion. The roller coasters that have loops will use this design.

Gravity is the force that attracts a body toward the center of the earth, or toward any other physical body having mass. Gravity provides the energy source for a roller coaster when the track is uphill. Once the roller coaster is at the top of the first hill and seperates from the lifting chain, the only energy left is gravitational potential energy. But once it begins to roll down the hill, its gravitational potential energy decreases and its kinetic energy increases.

Roller Coaster
Jiyoung Yun

10/11 B
Different Types of Cars

Fourth Dimension: Two seats from each car are positioned
on either side of the track. The seats spin or rotate.

Steel Stand Up : have seats between riders and the
shoulder harnests to keep riders from
falling out.

Suspending Swing : car body is mounted on the hinges
that connect to the main car that rides
on the track. Because of this, the car
freely swing in horizontal motion.
Physical Effects from Roller Coasters
constantly pushes and pulls at our bodies.
2. Whiplash Injuries : cause spinal injuries known as whiplash, because of the quick and sudden movements
Black out

Temporary loss of vision

Heart's inability to pump blood


Psychological Effect

Whiplash Injuries: quick and sudden movements
T-Express: Accident - T-Express, the scariest wooden coaster in the world, is located in South Korea. The accident occurred March 23rd, 2008. Someone was filming on the ride and accidentally dropped his camera and it blocked the sensor. The roller coaster stopped for about 17 minutes at the point that is 50 meters high.
Texas Giant : Accident - Fourteen people got injured and one of them died while riding “Texas Giant” in Six Flags Over Texas. Three of those injuries happened either before or after the ride, such as tripping on the steps leading to the roller coaster. A witness told local media that Ayala-Goana expressed concern moments before the 14-story ride began that the safety bar had not completely engaged. Friday evening.

Fujin Raijin II: In Japan, 19 people were injured and 1 killed. 5th of May, 2007. Passengers stand through the course of the ride, derailed and hit a guardrail. travel up to 75 kph, was in the last half of the 1,050-meter-long course when the accident occurred.

The first couple of tests are run with the seats empty, just to see if the coaster runs correctly. The next set of tests are run with weighted sandbags in the seats to see if the coaster can withstand the weight of passengers.
Computers are so important for the safety of roller coasters. They make riding a coaster safer than anything. Computer calculations make it possible to dip, loop without harming passengers.
How Often?
should be tested everyday before the park opens.
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