动态平衡问题是高考常考题型之一,常用处理方法有解析法、作图法、相似三角形法、正交分解法、极限法等,学生要在理解典型解法优缺点和适用范围的基础上,同时可能还要结合其它内容或方法,经过尝试,最终确定较好解法. The problem of dynamic balance is one of the most frequently used test questions in college entrance examination. The commonly used methods are analytic method, mapping method, similar triangulation method, orthogonal decomposition method and limit method. Students should, on the basis of understanding the advantages and disadvantages of the typical solution and its applicable scope, At the same time may also be combined with other content or methods, after trying to determine a better solution.