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电磁感应是一种常见的电磁现象,广泛应用在电气设备上。“磁刹车”指的是当金属片切割磁感线时,会在金属内部产生涡流,产生一个新的磁场来反抗原有的运动并伴随着能量转化。笔者通过探究强磁块在铜管过程中的运动性质,研究“磁性刹车”现象。一、实验探究过程中学物理课本中有这样一个演示实验:将一个强磁块从1 m左右长的铜管口处由静止释放后,强磁块并未做自由落体运动,而是缓慢地在铜管中下
Electromagnetic induction is a common electromagnetic phenomena, widely used in electrical equipment. “Magnetic brake ” refers to the metal when the magnetic induction line cutting, the metal will produce eddy currents, resulting in a new magnetic field to resist the movement and accompanied by the original energy conversion. By investigating the nature of the movement of strong magnets in copper pipe, the author studies the phenomenon of “magnetic brake”. First, the process of experimental exploration The middle school physics textbook has such a demonstration experiment: a strong magnet block from about 1 m long copper nozzle by the static release, the strong magnetic block did not do free-fall movement, but slowly Copper tube in the next