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本章万有引力定律研究的主要问题就有物体在地球表面上的随行问题和物体绕地球转动的圆周运动问题.如研究地球表面物体的运动,卫星绕地球的运动等就属于随行和绕行问题.但我们在解答这类问题时有时分不清重力与万有引力的区别,不知道什么时候重力和万有引力相等,什么时候不等,什么时候要考虑地球自转,什么时候不考虑地球自转,从而造成解答错误.为了搞清楚上述问题,首先我们要理解重力与万有引力的区别:(1)重力是万有引力产生的,但有时可认为两者相等,有
In this chapter, the main problems in the study of the law of universal gravitation are the attendant problems of the object on the surface of the earth and the circular motion of the object around the earth, such as the movement of objects on the surface of the Earth and the movement of the satellite around the earth. We sometimes can not distinguish the difference between gravitation and gravitation when solving such problems. We do not know when gravitation and gravitation are equal, when and when to consider the rotation of the Earth, and when the rotation of the Earth is not taken into consideration, thus causing a wrong answer. In order to clarify the above problems, we first need to understand the difference between gravitation and gravitation: (1) Gravity is generated by gravitation, but sometimes it can be assumed that the two are equal and there are