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下面介绍的验证牛顿第二定律演示装置具有制作容易、结构轻便、操作简单、读数直观、准确等优点。该演示器的结构和实际操作过程如下。主要结构:演示器的外形和尺寸如图(一)。主要组成是1.直径为60mm的铝质定滑轮两个,分别编为1号和2号;2.起动电磁铁两个;3.制动蹄形电磁铁及衔铁;4.竖直固定板;5.带有调节螺旋的底板;6.单刀双掷开关;7.附在竖直板上的刻度尺;8.铁质带钩砝码座及大小砝码
The verification Newton second law demonstration device described below has the advantages of easy fabrication, light weight, simple operation, intuitive and accurate readings. The structure and actual operation of the presenter are as follows. The main structure: The shape and dimensions of the demonstrator are shown in Figure 1. The main components are: 1. Two aluminum fixed pulleys with diameter of 60mm, which are respectively numbered 1 and 2. 2. Two starting electromagnets 3. Brake shoe-shaped electromagnet and armature 4. Vertical fixing plate 5. The bottom plate with adjustment screw; 6. Single-pole double-throw switch; 7. Scale attached to the vertical plate; 8. Iron belt hook weight holder and size weight