测量弹簧弹性系数实验装置的改进

Improvement of Experimental Device for Measuring Spring Elasticity Coefficient

基于超声波测距和杠杆放大原理精确测量弹簧弹性系数。该装置使用超声波测量系统来精确测量利用杠杆原理放大后的弹簧的伸缩长度,采用换轮组向上竖直拉弹簧的方式来消除弹簧重力对实验的的影响,从而精确确定形变量及弹簧的弹性系数。该实验装置是一种精确测量弹簧弹性系数的新装置,具有测量误差小、操作简单、直观性强等优点,不仅可以用作为精确测量弹簧弹性系数的装置,而且也可以用作教学演示装置用于课堂教学,激发学生对物理实验的兴趣。

The spring elastic coefficient is accurately measured based on the principle of ultrasonic ranging and lever amplification.The device uses an ultrasonic measuring system to accurately measure the expansion length of the spring amplified by the lever principle,and uses the method of pulling the spring up vertically to eliminate the influence of spring gravity on the experiment,so as to accurately determine the deformation and elastic coefficient of the spring.The experimental device is a new device for measuring spring elasticity coefficient accurately.It has the advantages of small measurement error,simple operation and strong intuition.It can be used not only as a device for measuring spring elasticity coefficient accurately,but also as a teaching demonstration device for classroom teaching to stimulate students’interest in physical experiments.