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最近在进行物理第一轮复习时,发现很多学生对力学中出现的斜面问题很是模糊,常常不能正确地分析清楚斜面和物体之间的作用力而错选。由于斜面问题千变万化,斜面既可以光滑,也可以粗糙;既可以固定,也可以运动,而求解斜面问题,能否做好斜面上物体的受力分析,尤其是斜面对物体的作用力(指支持力和摩擦力的合力)是解决问题的关键。现在就根据斜面上物体受到的外力的不同进行下面的分类讨论。
In the recent first physical review, I found that many students are very vague about the problem of beveling in mechanics. They often can not correctly analyze the force between the bevel and the object and make a mistake. Due to the ever-changing incline problem, the incline can be both smooth and rough. It can be fixed or moved to solve the incline problem. It can analyze the stress of the incline object, especially the force of the incline on the object Force and friction together) is the key to solving the problem. Now according to the slope of the object on the external force of the different classification of the following discussion.