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小球能过轨道的最高点是高中物理试题中常遇到的一个状态,由于存在的情况有多种形式,又涉及受力分析、正方向的规定、牛顿第二定律的应用,有时还会与前后运动过程相联系,看似简单的一个状态,其实对学生的能力要求是非常高的,学生如果不能全面系统地分析理解期规律特点,在处理具体问题时极易混淆,如果再与电场力、磁场力结合起来,难度更是加大.
The highest point where the ball can pass the track is a state often encountered in the high school physics test. Due to the existence of a variety of forms, it also involves the force analysis, the positive direction, the application of Newton’s second law, and sometimes Before and after the movement process is linked, a seemingly simple state, in fact, the student’s ability requirements are very high, if students can not fully and systematically analyze the characteristics of the understanding of the period, in dealing with specific issues can easily be confused, if you then with the electric force The combination of magnetic field force and difficulty is even greater.