共点力平衡问题一直都是高考的热点同时也是难点,其平衡条件是合外力为零.而平衡问题根据受力特点和研究对象的多少,可分为单体静态平衡、单体动态平衡、连结体静态平衡、连结体动态平衡四类。理清平衡问题的种类及每一类问题的典型处理方法,处理平衡问题也就有章可循了。 A total of the problem of balance of power has always been hot and difficult entrance examination, the balance of conditions is combined with external force is zero.Balance problem according to the characteristics of force and the number of subjects, can be divided into single static balance, single dynamic balance, Linkage static balance, dynamic balance of the four categories. To sort out the types of the balanced problems and the typical solutions to each type of problems, there is also a way to deal with the issue of balance.