摘要
基于阻尼振动的原理,利用智能手机测量弹簧振子的加速度,通过阻尼振动的动力学方程计算出金属球做阻尼振动时液体的阻尼系数和黏滞系数,并将黏滞系数测量值与理论值进行比较,相对误差为0.39%,进一步论证了本实验方案的可行性。与传统方案相比,基于智能手机的液体黏滞系数测量方法操作简单且趣味性强,同时降低了传统实验方法的仪器成本,对物理实验的线上教学具有一定的参考意义。
Based on the principle of damped vibration,the acceleration of spring vibrator is measured by smartphone.The damping coefficient and viscosity coefficient of liquid are calculated by the general solution of dynamic equation of damped vibration.The measured value of viscosity coefficient is compared with the theoretical value,the relative error is 0.39 percent.The feasibility of this experimental scheme is demonstrated.Compared with the traditional scheme,the method based on smartphone is easy to operate and interesting.Meanwhile,it reduces the instrument cost of traditional experimental methods,which has a certain reference significance for online teaching of physical experiments.
作者
曲阳
曹显莹
曹国军
何海霞
QU Yang;CAO Xianying;CAO Guojun;HE Haixia(School of Department of Mathematics and Physics,Harbin Institute of Petroleum,Harbin 150000,China)
出处
《大学物理实验》
2022年第2期117-120,共4页
Physical Experiment of College
基金
黑龙江自然科学基金联合引导项目(LH2020E095)
关键词
阻尼振动
加速度传感器
黏滞系数
弹簧振子
damped vibration
acceleration sensor
viscosity coefficient
spring vibrator
