用倾斜气轨系统与Spss测定重力加速度  

Measurement of Gravity Acceleration with Inclined Air Rail System and Spss

作　　者：王晓兵[1] 程满[1] 祝飞霞[1] 

机构地区：[1]楚雄师范学院物理与电子科学系,云南楚雄675000

出　　处：《楚雄师范学院学报》2013年第3期24-29,共6页Journal of Chuxiong Normal University

基　　金：国家特色专业项目资助;项目编号:12467

摘　　要：用垫块调整气轨的倾斜角,使滑行器在自身重力作用下沿气轨表面直接做功,使用智能计时系统精准测出滑块在气轨斜面定点位置的速度。由测量原理及不确定度分析,对照测量数据,引入Spss的曲线估计功能分析得到速长综合量与垫块高度的定标曲线,并验证出速长综合量与垫块高度存在线性关系,由此标定出重力加速度,并用置信概率为95%的不确定度对其进行了合理的分析和评定,得到更加合理的实验结果。Adjust the inclined angle of air track by the cushion block to make the sliding device act directly under its own gravity along surface of gas rail surface, and utilize intelligent timing sys- tem to measure the location and velocity of the sliding block on the inclined surface of air track. By the measurement principle and uncertainty analysis, in contrast to measurement data, we introduced SPSS curve estimation to analyze and obtain the calibration curve between the integrated parameter by velocity ＆ length and the height of the cushion block, and tested and verified the linear relation- ship between the integrated parameter by velocity ＆ length and the height of the cushion block. Therefore we calibrated the gravity acceleration and carried on reasonable analysis and estimation by the confidence probability of 95% uncertainty to achieve more reasonable experiment result.

关 键 词：倾斜气轨 SPSS 不确定度 速长综合量 重力加速度 

分 类 号：TS971[轻工技术与工程]