利用智能手机测量弹簧劲度系数与重力加速度  

Measuring spring stiffness coefficient and gravity acceleration using smartphone

作　　者：林奕晖 李德安[1] LIN Yi-hui;LI De-an(School of Physics and Telecommunicaion Engineering,South China Normal University,Guangzhou 510006,China)

机构地区：[1]华南师范大学物理与电信工程学院,广东广州510006

出　　处：《物理实验》2020年第3期55-59,共5页Physics Experimentation

摘　　要：利用智能手机中多种传感器进行竖直方向弹簧振子实验.在振子上安装自制光源或弱小轻磁铁,将手机水平放置在弹簧振子正下方,利用手机光线传感器软件或磁传感器软件得到弹簧振子做简谐运动时手机所在位置的光强或磁场强度变化图像.通过分析简谐运动光强或磁场强度变化图像可分别得出弹簧的劲度系数与当地重力加速度.A method of measuring spring stiffness coefficient and gravity acceleration using smartphone was developed.Placing smartphone below a harmonically oscillating spring attached with a light source or a magnet.Changes of the light intensity or the magnetic field intensity were recorded with the light or magnetic sensor of the smartphone.By analyzing the changes,the spring stiffness constant and the local gravity acceleration could be obtained respectively.

关 键 词：简谐运动 弹簧劲度系数 重力加速度 智能手机 

分 类 号：G633.7[文化科学—教育学]