弹簧与木块组成的问题不仅是高三复习的重点和难点,也是历年高考的热点,所以理解和掌握弹簧和木块类问题是力学复习的一个基本部分.现对平衡问题中弹簧与木块类问题进行归类分析,供同学们参考.一、一个弹簧和一个木块组成的模型例1如图1所示,重20N的物体静止在倾角为θ=30°的? The problem of the composition of springs and wooden blocks is not only the focus and difficulty of the review of the third year, but also the hot spot of the college entrance examination over the years. Therefore, understanding and mastering the problems of springs and wooden blocks is a fundamental part of the mechanics review. Now springs and wooden blocks are used to balance problems. Problems are categorized and analyzed for reference by students. 1. A model consisting of a spring and a wooden block. Example 1 As shown in Fig. 1, an object with a weight of 20N stands still at an inclination of θ=30°.