人教版高一物理第3章第7节“超重和失重”内容,演示的仪器和方法较多.而笔者在研究拓宽现有仪器使用范围的课题时,又用实验室现有仪器零件及器材,组装成一种构造极为简单而操作十分方便的超重失重演示器,觉得在贫困地区学校有推广意义,故特作介绍.1零件及器材摩擦计中的长条木? There are many demonstration instruments and methods in the contents of the PEP Senior Physics Class 3, Section 7, Section 7 “Overweight and Weightlessness.” While the author is studying the topic of broadening the scope of use of existing instruments, he also uses existing laboratory equipment parts and The equipment is assembled into an overweight and weightless demonstrator that is extremely simple in construction and very convenient to operate. It is felt that schools in poverty-stricken areas have promotion significance. Therefore, it is specially introduced to describe the long pieces of wood in the friction parts of parts and equipment.