一种角动量守恒演示仪的设计  

Design of a Demonstrator for Conservation of Angular Momentum

作　　者：姬洪伟 包敏 吴鹏 许昊 JI Hongwei;BAO Min;WU Peng;XU Hao(College of Science,Xijing University,Xi’an 710123,China;College of Civil Engineering,Xijing University,Xi’an 710123,China)

机构地区：[1]西京学院理学院,陕西西安710123 [2]西京学院土木工程学院,陕西西安710123

出　　处：《大学物理实验》2020年第3期72-74,共3页Physical Experiment of College

基　　金：西京学院2019年“大学生创新创业训练计划”项目(127152019069)。

摘　　要：设计了一种可用于角动量守恒定律演示的定轴转动系统,用不产生力矩的外力改变系统的转动惯量,使系统的转动角速度发生显著变化,达到演示角动量守恒的目的,文中详细阐述了角动量守恒演示仪的工作原理和设计要点。该角动量守恒演示仪具有演示直观、使用方便的特点。A kind of fixed axis rotation system which can be used to demonstrate the law of conservation of angular momentum is designed.The moment of inertia of the system is changed by the external force which does not produce moment,so that the angular velocity of the system changes significantly,so as to demonstrate the conservation of angular momentum.The working principle and design points of the demonstrator are described in detail.The demonstrator is intuitionistic and convenient.

关 键 词：角动量守恒 转动惯量 角速度 演示仪 

分 类 号：O4-33[理学—物理]