气轨上弹簧振子速度测量的误差分析  

On Errorsas Measuring the Velocity of the Spring Vibratoron Air Track

作　　者：张庆荣[1] 梁伟华[1] 李建民 

机构地区：[1]河北大学物理系 [2]空军保定飞行学院

出　　处：《河北大学学报（自然科学版）》1997年第S1期74-77,共4页Journal of Hebei University(Natural Science Edition)

摘　　要：分析了气轨上弹簧振子速度测量中的误差,指出使用U型挡光片后沿触发,可使摩擦力与挡光片相对移位造成的误差互相抵消而减小。It is analyzed that two kinds of principal error as measuring the velocity of the spring vibrator on air track. The first is caused by the resistance of air, the second is due to the photo-timer system which is used to measure the velocity. It is suggested to trigger the photogatcs with the back-sides of the 'U' slip for the both being able to partially offset each other.

关 键 词：弹簧振子 速度测量 误差 

分 类 号：O4-33[理学—物理]