利用智能手机测物体转动惯量的居家DIY实验HOME DIY EXPERIMENT OF MEASURING THE MOMENT OF INERTIA OF AN OBJECT WITH A SMART PHONE
徐钱欣,丁益民,范兵,郭雪如,徐瑶,张玖琪
摘要(Abstract):
基于传统三线摆测量刚体转动惯量的实验方法,选用居家物品自制三线摆,利用智能手机陀螺仪传感器和phyphox软件,通过绘制"角速度ω-时间t"图像,计算物体的转动周期,进而测得物体的转动惯量,同时验证平行轴定理。经过多次实验后,利用智能手机测量的结果与传统方法接近,与理论值比较其相对误差更小。居家实验自制三线摆,利用手机传感器提供测量数据,不仅为破解疫情期间实验教学困境提供可能,而且增加了实验的趣味性,激发学生的创新能力,为今后的创新性和开放性实验教学提供了新思路。
关键词(KeyWords): 三线摆;转动惯量;智能手机;phyphox;居家实验
基金项目(Foundation): 湖北省高等学校教学研究项目(2017215);; 湖北省教育科学规划课题(2018ZB072)资助
作者(Author): 徐钱欣,丁益民,范兵,郭雪如,徐瑶,张玖琪
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