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球的旋转、速度和轨迹的弯曲是中学物理教学中常见的问题,对这种现象的解释也多种多样。我们试图运用流体力学中的边界层理论,从物理学的角度做出比较详细的解释,以提供给中学物理教师作教学中的参考。而且,我们认为一些物理现象,其形成的物理机理有时往往是十分复杂的,很难仅仅用中学物理的知识做出简单的分析所能解决,这需要引起中学物理教师的注意。
Ball rotation, speed and trajectory bending is a common problem in secondary physics teaching, interpretation of this phenomenon is also varied. We try to use the theory of boundary layer in fluid mechanics to make a more detailed explanation from the perspective of physics to provide reference for middle school physics teachers. Moreover, we believe that the physical mechanism of some physical phenomena is sometimes very complicated. It is difficult to solve the problem simply by using the knowledge of middle school physics, which needs the attention of secondary school physics teachers.