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一、由一道题目发现的问题下面是一道关于万有引力定律应用的典型题目及其解答过程:例1 地球半径为 R+e=6.4×10~6m,地球表面重力加速度 g=9.8 m/s~2,又知月球绕地球运行可近似看做是匀速圆周运动.请先补充一个条件,导出估算月球到地心距离 r 的计算公式并具体估算出结果.解答补充条件是月球绕地球一周的时间是一个月,即T=27.5天=2 376 000 s.地球对月球的万有引力充当月球做圆周运动的向心力,有
First, the problems discovered by a problem The following is a typical problem about the application of the law of universal gravitation and its solution process: Example 1 The Earth’s radius is R + e = 6.4 × 10 ~ 6m, the earth’s surface acceleration of gravity g = 9.8m / s ~ 2 , And know that the lunar orbit around the earth can be regarded as a uniform circular motion.Please first add a condition and derive the formula to calculate the distance r from the lunar earth to the earth’s center and calculate the result concretely.The answer is that the lunar orbit around the earth is One month, that is, T = 27.5 days = 2 376 000 s. The gravitation of the Earth on the moon serves as the centripetal force of the moon to do circular motion. There are