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Cars are designed to have a top speed for safety reasons. An engine can only spin at so many RPMs before things start to fly off or destroy themselves. The same holds true for the rest of the moving parts on a car. Tires can only handle so many RPMs before the rubber starts to come apart. The faster things spin the greater the centrifical force.
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What gear ratio would you use to get enough torque and speed to achieve that fastest time?
The gear ratio for top gear is chosen to produce maximum speed, which occurs at a speed where the engine's maximum power is take up with maintaining a constant speed (on the level). For cars the overall ratio for top gear is 3.5 to 4.5 : 1. For example, if the engine's maximum power is 100 bhp at 6300 rpm, and that power can drive the car at the maximum speed of 110 mph, the overall ratio is chosen to give 6300 rpm at 110 mph.
What controls both the levitation of the cars and the trains speed?
(electro) Magnets in the "track".
What is top speed of dental drill?
About 400,000 RPM
What is derivation of critical speed?
Critical speed is the speed in RPM at which a rotating machine will destroy itself by all harmonic vibrations coinciding at maximum vibration.
What is the meaning of speed of computer?
Speed is the magnitude of velocity, or the rate of change of distance.
