摘要
以小车-弹簧-小车组成的弹簧振子为研究对象,研究此系统在定向移动过程中系统质心和两辆小车各自的运动情况。实验中,应用Pasco数字化实时采集系统分别测得两辆小车的实时位置,得到系统质心的运动状态,同时,通过函数拟合得到小车在质心参考系和绝对参考系中的运动表达式,判断出小车的振动状态,并分析摩擦力对系统动力学过程的影响。
Studying on the spring oscillator of car-spring-car system,the movements of the two cars and the system centroid in the directional movement process are analyzed,respectively.Based on real-time data of two cars’position recorded by Pasco digitally collecting system,the motion state of system centroid was obtained,and two cars’motion expressions in centroid reference system and absolute reference system were presented by function fitting,respectively.Based on the results above,the vibration states of the cars were judged,and the influence of friction on system dynamics was analyzed.
作者
田晓艳
张伟健
冯卓宏
陈志高
陈志华
TIAN Xiaoyan;ZHANG Weijian;FENG Zhuohong;CHEN Zhigao;CHEN Zhihua(College of Physics and Energy,Fujian Normal University,Fuzhou 350117,China;National Demonstration Center for Experimental Physics Education,Fujian Normal University,Fuzhou 350117,China)
出处
《实验室科学》
2020年第2期20-22,26,共4页
Laboratory Science
基金
福建师范大学本科教学改革研究项目(项目编号:I201602017)。
关键词
简谐振动
质心参考系
绝对参考系
弹簧振子
数字化实验
harmonic motion
centroid reference system
absolute reference system
spring oscillator
digital experiment
