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两物关联体系(又称连接体)问题,是高中阶段学习过程中牛顿运动定律解决的重点,也是难点.其一般解题的方法是通过分别对相关联的两物体进行准确受力分析,再分别对两物体应用牛顿第二定律列出方程(或方程组)进行求解.实际应用过程中,学生往往因关联物体相互间作用力分析出现错误而导致最终作答出错.本文通过几个典型例题,从整体角度分析关联物体受力,尽可能避开分析两物体间的相互作用力,力求简化分析求
It is also a difficult point to solve the problem of Newton’s law of motion in the course of senior high school learning.The problem of general problem solving is that by analyzing the accurate stress of the two objects respectively, The equations (or equations) are listed by using Newton ’s second law for the two objects respectively.In the practical application process, students often make mistakes due to errors in the analysis of the forces acting on the objects.Through several typical examples, From the perspective of the overall analysis of the force associated objects, as far as possible to avoid analyzing the interaction between the two objects, and strive to simplify the analysis