三线摆实验中摆角偏大产生的误差及修正方法  

Error Caused by Swing Angle and the Correction Method in Three-wire Pendulum Experiment

作　　者：庞通[1] 黄艺荣[1] 徐依斓 陈乾[1] 戴玉蓉[1] 

机构地区：[1]东南大学,江苏南京211189 [2]伦斯勒理工学院,纽约州特洛伊12180

出　　处：《大学物理实验》2015年第1期96-98,共3页Physical Experiment of College

摘　　要：研究了三线摆实验中摆角偏大(5°<θ<20°)时对测量转动惯量产生的误差和修正办法。实验发现随着摆角的增大,测得的圆盘转动惯量也会相应偏大,从而导致测量误差增大。文章通过进一步的理论分析解释了这一现象,并对测量结果进行了系统误差修正。Error caused by swing angle （ 5 °〈 θ 〈20 °） in measuring the rotational inertia via three-wire pendulum is studied,the method to correct the systematic errors is also presented. The measured inertia of disc increases with the increasing of swing angle. And,based on theoretical analysis,this phenomenon is explained and the systematic errors are corrected.

关 键 词：三线摆 转动惯量 系统误差 

分 类 号：P207.1[天文地球—测绘科学与技术]