纵观近年高考题发现,受力分析和共点力平衡是常考题型.下面结合自己的教学实践系统总结这类题的解题步骤和方法.一、确定研究对象当我们拿到题目时,首先确定是哪类题,如运动学题、力学题、能量计算题等.如果是力学平衡题,就需要立即准确找到研究对象.研究对象一般有两种:一是整体,二是隔离.对于系统是两个或两个以上物体组成,系统内各物体运动状态相同(各物体加速度相同)且求系统的外力,我们一般选择 Throughout the college entrance examination examination in recent years found that the force analysis and the total point of balance is a common test questions type the following combination of their own teaching practice system to summarize the problem solving steps and methods of such a problem.A determine the research object When we get the title, First determine what kind of questions, such as kinematics, mechanics, energy calculation problems, etc. If it is mechanical balance questions, you need to find the research object immediately and accurately.Research objects generally have two kinds: one is the whole, the other is isolation. System is composed of two or more objects, the system of objects in the same state of motion (the same acceleration of the object) and the system of external forces, we generally choose