论文部分内容阅读
一、制作: 1.落体制作:选一台微型直流电动机(我们用的是上海玩具磁钢厂生产的202—1型直流玩具电动机),用木头给它做一个园柱形支座。电动机的电源用三节大号电池,装在支座内部,控制开关用微型拨动开关,装在支座侧面。电动机竖直安装在支座上,电动机轴上焊有一个小金属园筒,用眼药水瓶做的喷墨器刚好能插进这个园筒内。整个装置用开有一条狭缝的园筒形外罩罩住,成为一个园柱形的整体,它就是实验用的落体。图1为拆除外罩后的落体装置图。
First, the production: 1. Fall body production: choose a miniature DC motor (we use a toy type 202-1 DC motor toy produced by the Shanghai Toy Magnetic Factory), use wood to make it a cylindrical support. The power supply of the motor uses three large batteries, which are mounted inside the support. The control switch is mounted on the side of the support with a miniature toggle switch. The electric motor is mounted vertically on the support. A small metal cylinder is welded to the motor shaft. The ink ejector made from the eye drops can just be inserted into this cylinder. The whole device was covered with a cylindrical outer cover with a slit, and it became a cylindrical whole body. It was the experimental fall. FIG. 1 is a diagram of the falling body apparatus after the cover is removed.