改进恒力矩法测定刚体转动惯量  

An Improved Constant Torque Method of Measuring the Rigid Body Moments of Inertia

作　　者：杨达晓[1] 张家伟[1] 杨耀辉[1] 陈学文[1] 姚雪[1] 谭仁兵[1] 

机构地区：[1]重庆科技学院数理学院,重庆401331

出　　处：《重庆科技学院学报（自然科学版）》2017年第6期103-107,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家自然科学基金项目"重味强子的产生和衰变及其新物理效应研究"(11347024);重庆市科委基金项目"对撞机上重味强子产生和衰变机制的研究"(2014JCYJA00030);重庆市教委基金项目"重味粒子产生和衰变机制的系统研究"(KJ1401313);重庆科技学院重点培育基金项目"高亮度正负电子对撞机上重味粒子的研究"(CK2016Z03)

摘　　要：针对大学物理专业课中刚体转动惯量的测定问题进行研究。选择合适的砝码及塔轮半径组合,让系统进行一次减速运动和一次加速运动,以测量刚体转动惯量。采用改进恒力矩的测定方法,实验阻力矩随角速度变化对实验结果的影响程度减小,测量结果准确性得到提高,误差减小。This paper focuses on the study of measurement of rigid body moment of inertia in specialized course of college physics. With the appropriate combination weights and cone radius,the system was carried out a deceleration movement and an acceleration movement,and the rigid body moment of inertia has been measured. With the improved method for measuring constant torque,the impact of variation of resisting moment according to the angular velocity was reduced,and the result was more accurate with smaller error.

关 键 词：阻力矩 刚体 转动惯量 恒力矩 

分 类 号：O313[理学—一般力学与力学基础]