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欢迎进入“物理现场”,本期为你呈现的都是来自生活的中考物理题,快来一展身手吧。看点一自行车是人们最常见的交通工具,从自行车的结构和使用来看,它应用了许多物理知识.下列说法中正确的是()A.车把相当于费力杠杆B.刹车系统应用了杠杆及摩擦的知识C.链条与其连接的两个齿轮组
Welcome to “Physical Scene”. This issue presents you with physics questions from the life test. Come and show it. Watching a bicycle is the most common form of transportation for people. From the point of view of the structure and use of bicycles, it applies a lot of physics knowledge. The correct one in the following statement is () A. The handlebar is equivalent to a laborious lever. B. The brake system is applied. Knowledge of levers and friction C. Two gear sets connected to it