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物体的“重力”与其所受的万有引力间关系如何?连带出一类涉及运用“重力”措词的易错问题,本文举四例作以说明,以排难解惑.例1飞船以a=g/2的加速度匀加速上升,某位置时台秤测得此状态下质量m=10 kg的物体重力为75 N,由此可知,此时飞船距离地面的高度为_______.(地球表面重力加速度g取10 m/s~2,地球半径R=6.4×10~3km)
What is the relationship between the “gravity” of an object and the gravitation it suffers from? There are two examples of error-prone problems involving the use of the term “gravity.” In this paper, four examples are given to illustrate the solution. The spacecraft accelerates and accelerates at a = g / 2 acceleration. At a certain position, the gravity of the object with the mass m = 10 kg measured in this position is 75 N, which indicates that the height of the spacecraft from the ground is _______ at this time. Earth’s surface gravity acceleration g take 10 m / s ~ 2, the Earth’s radius R = 6.4 × 10 ~ 3km)