物理学论文代写_专业团队_保A保B

发布时间：2020-11-02 热度：

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本位将为您介绍摩擦力的定义，以及我们日常所见的摩擦力现象

Friction has been defined as “the force that resists motion when the surface of one object comes into contact with the surface of another” (Lawson, 2001, p.53). Friction is one of the most important observable facts and has wide applications in day to day activities. For example, the traction that keeps a car’s tires moving on the road is only possible because of friction. Without friction, it is not even possible to walk or to grip an object!