why maglev
MagLev technology is entirely different from any form of transportation in operation today, but the basic principles that lie at the foundation are not beyond the understanding of the beginning electricity and magnetism student. It is in the application of these principles to design and optimize an actual train that things get hairy. The basic idea has been researched since the mid-sixties, but it is only now that economically feasible prototypes are being built and governments are seriously looking towards magnets to propel us into the next century. Leading the race is Germany. Their design, the Transrapid 07, is ready for commercial production. It utilizes conventional electromagnets and forces of attraction to levitate the train. A good web site to find out more about German plans for their design is http://transrapid.simplenet.com/index-e.htm The Japanese are investigating an entirely different design involving superconducting magnets to generate huge repulsive forces which levitate the train. However, their MLU002N is still in experimental stages. For more information, check out http://www.rtri.or.jp/rd/maglev_E.html With a little stretching, the average physics student should be able to comprehend the p
(Image source: page 27, Linear Motion Electromagnetic Systems.) We know that a moving charge sets up a Magnetic Field. We also know that this field sets up a force on other moving charges. This force is perpendicular both to the magnetic field and to the velocity of the charge: Note that the equations are exactly the same, provided that the setups are different. (That is, in the repulsive case, the vehicle coil was above the track coil. In the attractive case presented on this page, the vehicle coil is below the track coil.) The picture below illustrates the direction of FAB, which is the green vector on the drawing labeled FB. FB is perpendicular to ray AB, and the vector B. FB is opposite in direction to Fg , and can balance out the force of gravity.
Some common words found in the essay are:
Electromagnetic Systems, FB FB, , Field Intro, Energy Efficiency, Applied Electromagnetism, Eddy Currents, Ampère's Law, Wires Intro, Magnetic Systems, magnetic field, moving charge, moving magnetic field, magnetic force, moving magnetic, force moving, induced currents, magnetic fields, magnetic levitation, field strength, linear motion, magnetic field strength, linear motion electromagnetic, segment ab due, motion electromagnetic systems,
Approximate Word count = 4014
Approximate Pages = 16 (250 words per page double spaced)
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