Friction is a common force and also a force determined by multiple factors.Many people feel that the concept of friction is abstract and difficult to understand,especially the relationship between the magnitude of fric-tion and the contact surface.In order to assist the teaching of friction,the author designed a friction demonstration device.The article mainly introduces the design principle,device composition,production method and detailed us-age method of the demonstration device.It is suitable for students to conduct basic friction verification experiments.
NETL
NSTL
万方数据
维普
