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一、设计思想动能小车能形象地演示出重锤的重力势能可以转化为小车的动能;而小车的动能又可以转化为重锤的重力势能,只要摩擦足够小,可以反复转换,形象生动,并能引起学生的兴趣和注意。二、制作过程动能小车的构造由轮子、车身、围板及耳型框架等四部分组成,其外形如图1所示,现将各部分的取材和制作过程分述如下:1.轮子 5.2.车身3.围板细线6.框架7. 图14.重锤滑轮丁l次l-!土 (1)轮子:轮子由小号漆包线木质团筒加工而
First, the design idea of the kinetic energy car can visually demonstrate that the gravitational potential energy of the hammer can be converted into the kinetic energy of the car; and the kinetic energy of the car can be converted into the gravitational potential energy of the hammer. As long as the friction is small enough, it can be repeatedly converted and vivid. Can arouse students’ interest and attention. Second, the production process The structure of the kinetic energy car consists of four parts: wheel, body, hoarding, and ear frame. Its appearance is shown in Figure 1. Now, the process of drawing and manufacturing each part is described as follows: 1. Wheel 5.2. Body 3. Husk Thin Line 6. Frame 7. Fig. 14. Heavy Hammer Pulley Ding l-! Soil (1) Wheels: Wheels are processed by small enameled wire wood barrels.