基于PASCO转动运动传感器测量刚体转动惯量
齐敬强 ∗ ,刘梦林
北京交通大学 威海校区 实验中心,山东 威海 264401
Measuring Moment of Inertia of Rigid Body Basedon PASCO Rotary Motion Sensor
QI Jingqiang* ,LIU Menglin
摘要
PASCO转动运动传感器可以精准地测量并实时地记录物体转动时的角速度。 在落体法测量刚体转动惯量的实验中,为了提高实验的精度,将PASCO 转动运动传感器与刚体转动惯量实验仪相结合,用 PASCO转动运动传感器直接测量角速度并计算角加速度。 改进后的仪器简化了实验步骤,提高了实验精度。 对圆盘、圆环和圆柱试样的转动惯量进行测量,三组实验的相对误差分别为 0.2%、0.7%和 0.3%,实验结果准确。 通过实验结果可得,改进后的实验仪器操作简单且测量精度很高。
关键词:
PASCO传感器
角速度
转动惯量
相对误差
Abstract:
PASCO rotary motion sensor can accurately measure and record the angular velocity of the objectwhen it rotates in real time.ln the experiment of measuring moment of inertia of rigid body by the falling bodymethod ,in order to improve the accuracy of the experiment , the PASCO rotary motion sensor is used to directlmeasure the angular velocity and calculate the angular acceleration.The improved instrument simplifies theexperimental steps and improves the experimental accuracy. The relative errors of the three groups ofexperiments are 0.2%,0.7% and 0.3% respectively.The experimental results are accurate. According to theexperimental results,the improved instrument is easy to operate and has higher measurement accuracy.
Key words:
PASCO sensor
angular velocity
moment of inertia
relative error
发布日期: 2023-12-25
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