一、双星问题1.模型构建在天体运动中,将两颗彼此相距较近,且在相互之间的万有引力作用下绕二者连线上的某点做周期相同的匀速圆周运动的行星或恒星称双星。2.模型特点(1)由两颗星间的万有引力提供向心力。(2)两颗星做匀速圆周运动的周期、角速度相等。例1双星系统由两颗恒星组成,两恒星在相互引力的作用下,分别围绕其连线上的某一点做周期相 A binary problem 1. Model building In celestial movement, the two are close to each other, and under the mutual gravitation force around a certain point on the connection between the two do the same cycle of uniform circular motion of the planets or stars Double star. 2. Model Features (1) The centripetal force is provided by the universal gravitation between two stars. (2) two stars to do a uniform cycle of circular motion, angular velocity equal. Example 1 The binary system consists of two stars, each of which, under the effect of mutual attraction, circulates around a point on its line