New Balance What Are The Forces Acting On A Roller

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eleration forces are measured in so-called "g forces," where 1 g is the force of acceleration due to gravity near the surface of the earth, which is 9.8 meters per second squared, or 32.2 feet per second squared. A
roller coaster's acceleration is constantly changing, as is its position relative to the ground, and that causes the acceleration and the gravity forces to interact in unusual ways. When you are coasting down a steep hill at a high rate of speed, gravity pulls you downward, while acceleration seems to be pulling you upward. At a certain acceleration rate,[link widoczny dla zalogowanych], the forces cancel each other out, and this is when you feel weightless - just like a skydiver in free fall.
When riding a coaster,[link widoczny dla zalogowanych], you are continuously changing your direction of motion when you go through a loop. Not only is there acceleration,[link widoczny dla zalogowanych], but the direction and magnitude of the acceleration is always changing. In a couple of seconds you could feel accelerations of 2 g downward to 3 g upwards. This is what happens when you move to the top of the loop to the bottom of the loop. Those accelerations are what produce the "thrill" in thrill rides.
Some scientists and doctors think that excessive g forces may be dangerous to the human body, particularly the brain. The state of New Jersey has enacted laws limiting g forces, and similar legislation has been proposed on a federal level. However, research scientists at the University of Pennsylvania have concluded that roller coasters do not produce g forces large enough to harm riders' brains. The biggest risk of g forces is loss of consciousness because blood pools in limbs and away from the brain. But this effect requires sustained high g forces over three-quarters of a minute. The high g forces on roller coasters usually only last two or three seconds.
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