1引言在高中物理教学中,我们会碰到许多涉及运动的实验,为了说明物体运动时物理参量的变化,我们一般采用静态的图例来描述物体动态的变化过程,从而来求解一些物理参量.例如在做“测算当地重力加速度g”的实验时,我们一般用打点记时器和纸带以及重物(砝码)来实现这个实验.将重物 1 Introduction In high school physics teaching, we will encounter many experiments involving movement. In order to explain the changes of physical parameters during the movement of objects, we generally use static legends to describe the dynamic process of objects, and thus to solve some physical parameters. For example, In the experiment of “measuring the local gravitational acceleration g”, we usually use the tick timer and tape and weight (weight) to achieve this experiment.