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万有引力定律的应用与天体的匀速圆周运动问题密切相关,因而形成了《万有引力定律》应用的五大运动模型.这是近年来高考考查的热点问题.把握住五大运动模型的运动学和动力学特征,找出它们的区别和联系,是解答五大运动模型题的关键所在.现以地球的卫星为例,简述五大运动模型.模型1赤道上随地球一起自传的物体地球赤道上放置的一切物体,均以地球自转的角速度(或周期、频率、转速)随地球一起做匀速圆周运动.其做圆周运动的向心力由万有引力和地面的支持力的合力提供.以卫星放在赤道上为例,
The application of the law of universal gravitation is closely related to the celestial uniform circular motion problem, thus forming the five major models of motion applied to the “law of universal gravitation.” This is a hot issue in the college entrance examination in recent years.Changing the kinematics and dynamics characteristics of the five major models of motion, To find out their differences and connections is the key to solving the five major sports model problems.Considering the Earth’s satellites as an example, the five major models of motion are briefly described: Model 1 All the objects placed on the equator of the Earth along the Earth along the equator, All at a constant circular motion with the earth at the angular velocity (or cycle, frequency and rotation speed) of the Earth’s rotation, and its centripetal force of circular motion is provided by the resultant force of gravitation and ground support force. Taking the satellite placed on the equator as an example,