This is an improved experiment.The experiment used integrated hall switch sensor and Jonly balance in measuring obstinacy modulus,offered a method of calculating the spring efficiency mass.

• 这是一个改进型实验。该实验使用集成霍尔开关传感器,结合焦利氏秤用振动法求弹簧的倔强系数,并介绍了计算弹簧有效质量的一种方法。