摘要
用FD-IM-II新型转动惯量测定仪测刚体转动惯量的实验条件之一是转动圆盘角度要小于5°,在实验中发现该仪器没有配置角度控制装置,因此无法准确控制角度,会造成实验结果误差增大。文章为FD-IM-II新型转动惯量测定仪的三线摆设计了2种转动角度控制装置的方案,这样转动角度就可以精确控制在5°范围之内,保证实验条件的满足,从而使实验结果的误差减小。
One of experimental conditions of measuring the moment of inertia of a rigid body by using the new rotational inertia locator called FD-IM-II is that the angle of rotating disc should be less than 5 degrees. However,an angle control device had not been installed in the rotational inertia locator, so we can not control angle accurately, and lead to the error of experiment increase. In this paper, two kinds of devices for trilinear pendulum are tried to design and the samples are showed that are used to control the turn angle,which can make the turn angle of the lower disc less than 5 degrees. Therefore, it provides a favorable experimental condition and reduces the measurement error.
出处
《大学物理实验》
2013年第2期31-32,共2页
Physical Experiment of College
基金
湖北省教育厅教学研究项目(2010269)
湖北民族学院教学研究项目(2011JYB03)
关键词
三线摆
转动角度控制
装置设计
装置制作
trilinear pendulum
angle control
device design
device making
