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一、双星问题两颗质量可以相比的恒星相互绕着旋转的现象,叫双星.双星问题是万有引力定律在天文学上的应用的一个重要内容.现就对于双星天体系统问题的解题方法做简要分析.(1)由于双星和该固定点O总保持三点共线,所以在相同时间内转过的角度必相等,即双星做匀速圆周运动的角速度必相等,因此周期也必然相同.(2)由于每颗星的向心力都是由双星间相互作用的万有引力提供的,因此大小必然相等.(3)要明确双星中两颗子星匀速圆周运动的运动参量的关系,两子星绕着连线上的一点做圆周运动,所以它们的运动周期相等,角速度相等,所以线速度与两子星的轨道半径成正比.(4)要明确两子星圆
A binary problem Two stars can be compared with the mass around each other around the phenomenon of rotation, called the binary star binary problem is the law of gravity in astronomy application of an important content now on the binary system for solving the problem of astrophysics simple (1) Since the binary star and the fixed point O always maintain three-point total line, so the angle of rotation in the same time must be equal, that is to say, the uniform angular velocity of the binary star must be equal, so the cycle must be the same. ) Since the centripetal force of each star is provided by the gravitational attraction of the interaction between the two stars, the magnitude must be equal. (3) To clarify the relationship between the motion parameters of the two stars in the uniform circular motion, The circular motion of a point on the line, so their movement cycle is equal, the angular velocity is equal, so the linear velocity is proportional to the orbital radius of the two sub-stars. (4)