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学生实验“测定匀变速直线运动的加速度”传统方法是用电磁打点计时器、斜面、小车等仪器进行实验。但是打点计时器不易调整,又存在摩擦,实验误差往往较大,同时用逐差法计算,增加了理解的难度。为了克服上述缺点,笔者设计制作了运动学实验器,实际使用表明,其效果颇佳。一、仪器制作 1.斜槽如图1所示,用双玻璃管或双金属棒做轨道。长度不小于90cm。把轨道固定在厚木板上,并在低端安装捕捉器,木板一侧标上厘米刻度。
Student’s experiment “Measurement of the acceleration of uniform linear motion” The traditional method is to experiment with electromagnetic timers, bevels, trolleys and other instruments. However, the timer is not easy to adjust, there is friction, and the experimental error is often large. At the same time, it is calculated by the method of subtractive difference, which increases the difficulty of understanding. In order to overcome the above disadvantages, the author designed and manufactured a kinematics experimenter. The actual use shows that the effect is quite good. First, the instrument production 1. Chute as shown in Figure 1, with double glass or double metal rods to do the track. The length is not less than 90cm. Secure the rails to the planks and install the traps on the lower side. Mark the sides of the planks in centimeters.