利用智能手机和自制复摆测量重力加速度

doi:10.14139/j.cnki.cn22-1228.2022.05.024

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摘要

自制了一款可采集手机偏转角和角速度的手机软件，结合自制的等臂复摆，从能量守恒出发，利用自制手机ＡＰＰ，测量自制复摆转动时的偏转角和角速度。对偏转角的余弦值和角速度的平方进行线性拟合，最终通过拟合直线的斜率得到重力加速的值，结果较好，实验操作简单，无小角度摆动的限制。

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关键词: 重力加速度复摆大角度摆动自制手机ＡＰＰ

Abstract:

A mobile phone software that can collect the deflection angle and angular velocity of the mobile phoneis made.Combined with the self-made isometric pendulum , starting from the energy conservation , the self-mademobile app is used to measure the deflection angle and angular velocity of the self-made compound pendulum.Linear fitting is performed on the cosine value of the deflection angle and the square of the angular velocity ,andfinally the value of the gravitational acceleration is obtained by fitting the slope of the straight line.

Key words: acceleration of gravity compound pendulum large-angle swing self-made mobile app

出版日期: 2022-10-25 发布日期: 2022-10-25 整期出版日期: 2022-10-25

ZTFLH:

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引用本文:

张　顺 , 肖　帅 , 曹　静 , 袁　鹤 , 王　纯 , 吕宪魁 , 郑永刚 , 刘文广 . 利用智能手机和自制复摆测量重力加速度 [J]. 大学物理实验, 2022, 35(5): 109-112.
ZHANG Shun', XIAO Shuai, CAO Jing , YUAN He', WANG ChunLU Xiankui', ZHENG Yonggang , LIU Wenguang. Measurement of Gravitational Acceleration Based onSmartphone and Self-made Compound Pendulum . Physical Experiment of College, 2022, 35(5): 109-112.

链接本文:

http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2022.05.024 或 http://dawushiyan.jlict.edu.cn/CN/Y2022/V35/I5/109

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