应用阿基米德定律和物体的浮沉条件等规律来解决有关浮力计算是中学物理教学中的一个难点.有关浮力习题,量大、题型多,由于浮力是随物体浸入液体中的情况不同而变化的,所以解浮力习题似乎没有一定的规律,因此不少学生反映,浮力定律好背,浮力习题难解,特别是有几次沉浮过程的复杂题,更是无从下手.解浮力习题主要应用三方面的物理知识:一是阿基米德定律,二是物体的浮沉条件,三是力的平衡知识,浮力习题变化虽多,但只要我们仔细观察,可以发现.浮力习题可划分 Applying the law of Archimedes and objects floating and falling conditions and other rules to solve the problem of buoyancy calculation is a difficult point in the teaching of physics, buoyancy problems, the amount of large, many types of questions, because the buoyancy is with the object immersed in the liquid in different situations Change, so the solution buoyancy problem does not seem to have a certain law, so many students reflect the buoyancy law back, buoyancy exercises difficult to solve, especially the complex process of ups and downs of the process, it is impossible to start. Three aspects of physical knowledge: First, Archimedes law, the second is the object of floating conditions, the third is the balance of knowledge, buoyancy exercises change though, but as long as we look carefully, you can find buoyancy problems can be divided