How does the maglev train avoid friction?

Maglev trains which use magnetism to reduce the friction. In the track magnets are placed which opposes the other magnetic which is placed in the bottom of maglev train due to which a repulsive force is created . This repulsion will keeps the train levitating slightly above the track .



Maglev (Magnetic Levitation) trains avoid the primary source of friction—physical contact with the track—by using powerful electromagnets to levitate the vehicle. Instead of wheels, the train "floats" on a cushion of air, typically between 1 and 10 centimeters above a specialized guideway. This is achieved through magnetic repulsion or attraction (depending on whether it’s an EMS or EDS system), where the magnetic poles of the train undercarriage and the track push against each other. By eliminating rolling resistance from wheels and bearings, the train can reach extreme speeds, such as the 600 km/h (373 mph) record set in Japan. The only significant force the train must overcome at high speed is aerodynamic drag (air resistance). Because there are no moving parts in direct contact with the track, maglev trains are also incredibly quiet and require much less mechanical maintenance than traditional high-speed rail systems.

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This reaction between the magnets creates a magnetic field. The field lifts the train off of the track. This lets air flow between the train and the guideway. The trains never touch the track; they hover just above the track.

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relying purely on magnetic forces However, this new 'Sky Train' system takes electricity out of the equation, using only magnets composed of rare-earth metals that 'create a constant repelling force [which] can lift a train with 88 passengers and keep it floating even without power,' states South China Morning Post.

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Even if the power goes out, levitation forces keeps the train in the air while it is traveling at high speed. The vehicle comes safely to a stop rather than suddenly falling onto the track.

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Maglev trains require very straight and level tracks to maintain high speeds. This necessitates extensive viaducts and tunneling, making construction costly.

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The way maglev trains go forward or backwards is that there are coils lined up on the track in an order north pole south pole and so on and across from that is the opposite side of a magnet south pole north pole and so on.

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On 22 September 2006, a Transrapid magnetic levitation (or maglev) train collided with a maintenance vehicle near Lathen, Germany, killing 23 people. It was the first fatal accident involving a maglev train.

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Maglev's unit capital costs surpass those of New HSR by lesser, but still significant, amounts, ranging from $11 to $19 million per mile in recent studies. Thus, the Maglev technologies of today are the most expensive form of HSGT in terms of up-front investment. times. Washington.

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Maglev trains do not create direct pollution emissions and are always quieter in comparison to traditional systems when operating at the same speeds [6]. In the area of noise emissions, maglev trains are superior in every way to wheel/rail systems, not to mention airplanes.

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Hermann Kemper (* April 5, 1892 Nortrup, Germany, in the district of Osnabrueck, † July 13, 1977) was a German engineer and is considered by many the inventor of the basic maglev concept. In 1922, Hermann Kemper began his research about magnetic levitation.

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Friction acts to prevent or resist relative motion between the two surfaces. So, if there is a torque on the wheels and the point of contact can not move relative the rail (just where it touches) because of static friction, the only way the wheel can turn is if the train moves relative the wheel.

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Once the train starts to slide, it is more likely that it will continue to do so. so, to sum it up: it is because of the weight of the whole train provides sufficient friction and steel-to-steel friction coefficient is also actually sufficient (not 'slippery' as i thought).

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