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初中学生在学习物理过程中,由于缺乏对物理现象、物理过程和物理规律深入思考,导致对所学物理知识理解不透彻,形成一些学习上的误区.本文仅对浮力中的阿基米德原理及物体悬浮、漂浮条件略加分析.误区一:有这样一个判断题:“10牛顿的水对浸在它里面的物体产生的浮力可以大于10牛顿.”根据阿基米德原理:浸入液体里的物体受到向上的浮力,浮力大小等于它排开的液体
In the process of learning physics, junior high school students lack deep thinking on physical phenomena, physical processes and physical laws, resulting in poor understanding of the physics knowledge and some misunderstandings in learning. This article only focuses on the Archimedean principle in buoyancy. Suspended and floated conditions of the object are slightly analyzed. Misunderstanding 1: There is such a judgment: “10 Newton’s water can generate more than 10 Newtons of buoyancy on objects immersed in it.” According to Archimedes’ principle: immersed The object in the liquid is subject to upward buoyancy and the buoyancy is equal to the volume of liquid it displaces