测量三线摆上下悬盘间垂直距离的改进方案

Modified Methods for Measuring the Vertical Distance Between the Upper and Under Discs of Three-Wire Pendulum

针对三线摆法测刚体转动惯量实验装置中上下悬盘间垂直距离的测量方法提出了四种改进方案,即投影法、铅锤法、杆尺法和辅助尺法。用四种方案进行了完整实验并做了数据计算分析,发现四种测量三线摆上下悬盘间垂直距离的改进方案的结果误差都很小,说明四种改进方案都是可行的。从操作方便的角度来看,投影法和杆尺法更合适。

The four modified methods for measuring the vertical distance between the upper and under discs in the rigid body rotational inertia experimental device by three-wire pendulum were put forward,namely projection method,plummet method,ruler method and auxiliary ruler method.The complete experiments were carried out by four methods and the data were calculated and analyzed.Four modified methods for measuring the vertical distance between the upper and under discs of the three-wire pendulum were found to have little errors,indicating that the four modified methods were feasible.From the point of view of convenient operations,the projection method and the ruler method were more applicable.