由于对物质密度的影响浮沉印象深而忽视对物体所受浮力、重力的分析,遇到下列问题就会根据物体密度大小作出错误答案:“体积相同的木块和铁块,把它们投入水中,当它们静止时,谁受的浮力大?”现在的义务教育课本,把物体的浮沉取决于它受到的浮力和物重的对比放在第一节“浮力”里(在第二节“阿基米德原理”之前),是在 Due to the fact that the impact on the material density is very deep and the impression of buoyancy and gravity on the object is neglected, the following questions will be answered based on the density of the object: “The same volume of wood and iron pieces will be thrown into the water. When they are still, who is subject to buoyancy? “The current compulsory education textbook puts the object’s buoyancy in the first quarter’s “buoyancy force” (depending on the buoyancy and weight of the object it receives) (in the second Before the “Archimedes principle”) is