浮力综合题是中考出现频率较高的一类试题,学生面对这类试题,往往不知从何入手.究其原因,一是这类题目综合性强,常把密度、重力、重力与质量的关系、压强、力的合成、力的平衡、阿基米德原理、物体的浮沉条件及杠杆的平衡原理等联系在一起;二是没有掌握合适的解题程序和正确理解题意. The buoyancy problem is a class of high-frequency test questions. Students often do not know where to start in this type of test. The reason is that the first is that these topics are comprehensive, often involving density, gravity, gravity and quality. Relations, pressures, force synthesis, force balance, Archimedes’ principle, floatation conditions of objects, and balance principle of levers are linked together; second, there is no proper problem solving procedure and correct understanding of the question.