双挡光片法测定刚体的转动惯量  

Measuring rotational inertia of rigid body with two light shielding pieces

作　　者：张娟[1] 周海越 孙迎春[1] 孙海龙[1] 

机构地区：[1]东北师范大学物理学院,吉林长春130024

出　　处：《物理实验》2013年第12期30-33,共4页Physics Experimentation

基　　金：吉林省教育厅精品课;东北师范大学精品课

摘　　要：采用双挡光片对刚体转动实验的装置进行改进,从理论推导和实验验证分别探讨了双挡光片代替原实验装置中的单挡光片的可行性和实验结果的精确度,确定了双挡光片的挡片宽度Δs的取值范围,针对不同Δs的取值测量了所对应的角加速度及刚体转动惯量.The university physics experimental device of ＂rigid rotation research＂ was improved u- sing two light shielding pieces. The feasibility and precision of the experimental results were discussed theoretically and experimentally. The range of the width of the two light shielding pieces △s was ob- tained, and the angular accelerations and rotation inertness for different values of △s were measured.

关 键 词：双挡光片 挡光宽度 刚体 角加速度 转动惯量 

分 类 号：O313.3[理学—一般力学与力学基础]