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# Roller Coaster Physics!

i <3 roller coasters
by

## jamjam :)

on 3 April 2013

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#### Transcript of Roller Coaster Physics!

Physics In Roller Coasters How A Roller coaster Initially Starts Roller coasters have no engine
At beginning of the ride there is a lift that takes the ride up to a high point
be only time a motor is in use and it is only used for that gear and not the actual roller coaster
There are chain lifts, conventional lifts, or a catapult-lunch to start the motion of the coaster
After its at the top of the first hill it must complete the ride on its own How Roller Coasters Continue to move Roller coasters have no engine
At beginning of the ride there is a lift that takes the ride up to a high point
be only time a motor is in use and it is only used for that gear and not the actual roller coaster
There are chain lifts, conventional lifts, or a catapult-lunch to start the motion of the coaster
After its at the top of the first hill it must complete the ride on its own
The conversion of potential energy to kinetic energy is what drives the roller coaster Roller Coasters depend on two types of energy : Potential & Kinetic
Potential energy: energy that is being stored -As a roller coaster is moving up to the top of the hill it has potential energy Kinetic Energy: energy in motion -when roller coaster descends down the hill The higher the hill the coaster is coming down the more kinetic energy is available to "push" the carts up the next hill, and faster the train will go.
The conversion of potential energy to kinetic energy is what drives the roller coaster Roller Coasters depend on two types of energy : Potential & Kinetic
Potential energy: energy that is being stored -As a roller coaster is moving up to the top of the hill it has potential energy Kinetic Energy: energy in motion - when roller coaster descends down the hill The higher the hill the coaster is coming down the more kinetic energy is available to "push" the carts up the next hill, and faster the train will go.
The conversion of potential energy to kinetic energy is what drives the roller coaster Roller Coasters depend on two types of energy : Potential & Kinetic
Potential energy: energy that is being stored -As a roller coaster is moving up to the top of the hill it has potential energy Kinetic Energy: energy in motion - when roller coaster descends down the hill The higher the hill the coaster is coming down the more kinetic energy is available to "push" the carts up the next hill, and faster the train will go. The Affect of Gravity Gravity helps pull the roller coaster down the first hill
-Applies a constant downward force on the cars
Helps coaster stay on path and follow track
The conversion of potential energy to kinetic energy is what drives the roller coaster Roller Coasters depend on two types of energy : Potential & Kinetic
Potential energy: energy that is being stored -As a roller coaster is moving up to the top of the hill it has potential energy Kinetic Energy: energy in motion - when roller coaster descends down the hill The higher the hill the coaster is coming down the more kinetic energy is available to "push" the carts up the next hill, and faster the train will go.
The conversion of potential energy to kinetic energy is what drives the roller coaster Roller Coasters depend on two types of energy : Potential & Kinetic
Potential energy: energy that is being stored -As a roller coaster is moving up to the top of the hill it has potential energy Kinetic Energy: energy in motion - when roller coaster descends down the hill The higher the hill the coaster is coming down the more kinetic energy is available to "push" the carts up the next hill, and faster the train will go. Centripetal Acceleration And Centrifugal Force Centripetal acceleration: acceleration that comes from a force that is not in a straight line, rather it is in a circular pattern
HOW IT WORKS ON COASTER..... - Centripetal acceleration points toward the center of the circular path of the train -The passengers feel a force pushing them to the outer edge of the circular path which is described as centrifugal force The centrifugal force is actually your body's inertia and resistance to the train's change in direction your body wants to continue in a straight line and attempts to do so as the train turns. -The centripetal force prevents objects from exiting a curve by continuously making them change their direction toward the center of rotation. -Then Gravity along with the track, pulls down on the cars and the riders with a constant force and keeps the centripetal force needed to keep the cars on the arching path Effect On Rider... Centripetal acceleration: acceleration that comes from a force that is not in a straight line, rather it is in a circular pattern
HOW IT WORKS ON COASTER..... - Centripetal acceleration points toward the center of the circular path of the train -The passengers feel a force pushing them to the outer edge of the circular path which is described as centrifugal force The centrifugal force is actually your body's inertia and resistance to the train's change in direction your body wants to continue in a straight line and attempts to do so as the train turns. -The centripetal force prevents objects from exiting a curve by continuously making them change their direction toward the center of rotation. -Then Gravity along with the track, pulls down on the cars and the riders with a constant force and keeps the centripetal force needed to keep the cars on the arching path Effect On Rider...
The conversion of potential energy to kinetic energy is what drives the roller coaster Roller Coasters depend on two types of energy : Potential & Kinetic
Potential energy: energy that is being stored -As a roller coaster is moving up to the top of the hill it has potential energy Kinetic Energy: energy in motion - when roller coaster descends down the hill The higher the hill the coaster is coming down the more kinetic energy is available to "push" the carts up the next hill, and faster the train will go.
The conversion of potential energy to kinetic energy is what drives the roller coaster Roller Coasters depend on two types of energy : Potential & Kinetic
Potential energy: energy that is being stored -As a roller coaster is moving up to the top of the hill it has potential energy Kinetic Energy: energy in motion - when roller coaster descends down the hill The higher the hill the coaster is coming down the more kinetic energy is available to "push" the carts up the next hill, and faster the train will go. Free Fall And Acceleration If you’re sitting in a roller coaster and it starts to fall down a very high hill, gravity will be pulling you down although the force of acceleration makes you feel as though you are being pushed forward. Sometimes during the ride, these forces can counteract each other, which will make you feel as though you are weightless or free-falling. However, when you are traveling up a very large hill, the two forces will be working in the same direction instead of the opposite ones and this will result in quite the opposite effect on you. Instead of feeling weightless, you will feel very, very heavy as you are ‘sucked’ back into your seat.

One of the best ways to understand this concept is to think about when you’re at the top of the hill on a roller coaster and just as you begin your descent you let go of your harness or the safety bar. As you begin to fall, the cart that you’re in will continue to follow the path of the track while your body will continue to follow the path of motion. This results in your body moving up while the cart is moving down. Your body will actually be lifted out of its seat for a moment before is plopped back down. When your sitting in a roller coaster and it starts to fall down a steep hill, gravity will be pulling you down, but acceleration will make you feel like your being pushed forward If your sitting in a roller coaster and it starts to fall down a steep hill, gravity will be pulling you down but acceleration makes you feel like your being pushed forward. -Sometimes these forces can counteract, which make you feel as through you are weightless or free-falling for example, when your at the top of the hill and just as you descend down, you let go of the safety bar. -As you begin to fall the cart will continue to follow the path of the track while your body continues to follow the path of motion. -your body moves upward while the cart is moving down and will actually be lifted out of its seat for a moment.
The conversion of potential energy to kinetic energy is what drives the roller coaster Roller Coasters depend on two types of energy : Potential & Kinetic
Potential energy: energy that is being stored -As a roller coaster is moving up to the top of the hill it has potential energy Kinetic Energy: energy in motion - when roller coaster descends down the hill The higher the hill the coaster is coming down the more kinetic energy is available to "push" the carts up the next hill, and faster the train will go.
The conversion of potential energy to kinetic energy is what drives the roller coaster Roller Coasters depend on two types of energy : Potential & Kinetic
Potential energy: energy that is being stored -As a roller coaster is moving up to the top of the hill it has potential energy Kinetic Energy: energy in motion - when roller coaster descends down the hill The higher the hill the coaster is coming down the more kinetic energy is available to "push" the carts up the next hill, and faster the train will go. Inertia
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. As the coaster approaches a loop, the direction of a passenger's inertial velocity points straight ahead at the same angle as the track leading up the loop At the top of the loop the force of the car's acceleration pushes the passenger off the seat toward the center of the loop, while inertia pushes the passenger back into the seat (which also creates weightlessness)
The conversion of potential energy to kinetic energy is what drives the roller coaster Roller Coasters depend on two types of energy : Potential & Kinetic
Potential energy: energy that is being stored -As a roller coaster is moving up to the top of the hill it has potential energy Kinetic Energy: energy in motion - when roller coaster descends down the hill The higher the hill the coaster is coming down the more kinetic energy is available to "push" the carts up the next hill, and faster the train will go.
The conversion of potential energy to kinetic energy is what drives the roller coaster Roller Coasters depend on two types of energy : Potential & Kinetic
Potential energy: energy that is being stored -As a roller coaster is moving up to the top of the hill it has potential energy Kinetic Energy: energy in motion - when roller coaster descends down the hill The higher the hill the coaster is coming down the more kinetic energy is available to "push" the carts up the next hill, and faster the train will go. How Roller Coasters Stop Friction between the train and its tracks as well as the air take energy out of the coaster, slowing down the train -creates both heat and sound which is very noticeable at end of ride as all remaining kinetic energy is taken out through brakes -Roller coasters reduce/increase friction by using different kinds of wheels like running, friction, or underfriction wheels Video on Weightless Banana Careers Mechanical engineer: design track, coaster, dips, curve (\$31,940- \$73980 Materials Engineer: design carts, select materials to + or - speed (\$80,000) Ride operator: operate and secure ride (\$20,000 Future Ideas... The BRC imagination Arts design team has proposed a roller coaster called "Zero Gravity" that would travel up a steep track at speeds of 100 miles an hour -Then its faces a controlled drop that would essentially put its passengers into zero gravity for 8 seconds -The ride would be completely enclosed giving loosely buckled passengers the feeling of floating in a room and while weightless they'd be encouraged to play with a small prop like a ball or cup of water What I Learned physics is what mainly controls a roller coaster Roller coasters do not have an engine Potential and Kinetic energy are what mainly drive the roller coaster Video on design
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