平衡状态下的物体模型,是同学们需要掌握的重要知识点,也是历年高考的热点。对有关物体平衡问题的解法下面举例说明,请同学们参考。一、物体动态平衡问题的三种分析方法(1)物体受三个力作用,若一个力为恒力,另一个力的大小或方向不变,求解第三力的变化时,可用图解法;(2)如果解题时不能构造力的直角三角形 The object model under the equilibrium state is an important knowledge point that the students need to master and is also the hot spot of the college entrance examination over the years. The solution to the problem of balance of objects The following examples, please refer to the students. First, the object of dynamic balance of the three analytical methods (1) The object by three forces, if a force is constant force, the size of the other force or direction unchanged, the solution to the third force changes, the available graphic method; (2) A right-angled triangle can not be constructed if the problem is solved