摆杆和摆杆座质量对复摆实验的影响  

Effect of the Mass ofthe Swing Rod and Swing Rod Seat on the Compound-pendulum Experiment

作　　者：段益峰[1] 秦丽霞[1] 于建勇[1] 

机构地区：[1]中国矿业大学,江苏徐州221116

出　　处：《大学物理实验》2015年第1期41-43,共3页Physical Experiment of College

基　　金：中国矿业大学青年教师教学改革资助计划项目(201153)

摘　　要：通过理论分析证明复摆实验装置中摆杆和摆杆座质量对实验的影响,指出在摆杆和摆杆座的质量不能忽略的情况下,由摆杆、摆杆座和摆锤组成的刚体并非固定刚体。针对现有的刚体系统重新设计实验方案,推导出利用该装置测量重力加速度的理论公式,实验结果证明该方案切实可行。The theoretical analysis shows that the mass of swing rod and swing rod seat can not be ignored for the compound-pendulum experiment. The compound pendulum experiment device,not a fixed rigid body,con-sists of the swing rod,swing rod seat and pendulum. Based on the rigid body system,we redesign the experi-mental scheme and achieve the theoretical formula to measure the acceleration of gravity. The good agreement between experimental and present results shows that the experimental scheme is practically feasible.

关 键 词：复摆 摆杆座 转动惯量 

分 类 号：O4-33[理学—物理]