万有引力定律在天文学上的应用规律无外乎就两个,即万有引力近似等于重力和万有引力提供向心力.但笔者从教学实践来看,许多同学在学习本章时总存在一些问题,笔者就自己的学生在本章单元考试中四道错误率较高的题目的常见错误解法作一列举和剖析,并就如何防范谈几点注意事项. The law of universal gravitation has no more than two rules of application in astronomy. That is, gravitational force is approximately equal to gravity and gravitation provide centripetal force. However, from the perspective of teaching practice, many students always have some problems in learning this chapter. The author regards his students as This section of the unit examination of the four common errors in the problem of common mistakes to make an enumeration and analysis, and on how to prevent talking about a few matters needing attention.