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人教实验版高一物理(必修②)第五章第二节介绍了“质点在平面内的运动”的方法:用小蜡块在玻璃管中上浮演示运动合成。但该实验方法存在由于浮力作用导致小蜡块不能停留在玻璃管底部的缺点,故不能单独演示小蜡块在水平方向的分运动,对理解运动的合成有一定的影响。为此,笔者自制了一种电动多功能合成演示器,不仅能演示多种运动的合成,而且能在黑板上留下运动后的痕迹。一、制作方法1.如图1所示,在长60cm“工”字形木架的左
People teach experimental version of a high physics (compulsory ②) Chapter V of the second chapter describes the “movement of particles in the plane ” method: a small wax block floating up in the glass tube to demonstrate the movement of synthesis. However, the experimental method has the disadvantage that the small wax block can not stay at the bottom of the glass tube due to the buoyancy effect. Therefore, it is impossible to separately demonstrate the sub-block movement in the horizontal direction and have some influence on the synthesis of the movement. To this end, I made a self-made multi-function electric synthesizer, not only to demonstrate the synthesis of a variety of sports, but also to leave traces on the blackboard after exercise. First, the production method 1. As shown in Figure 1, in the long 60cm “工 ” font wooden frame left