利用视频追踪法测量运动的加速度  

Measuring the acceleration by video tracking method

作　　者：赵霞[1] 张增明[1] ZHAO Xia;ZHANG Zeng-ming(College of Physics, University of Science and Technology of China, Hefei 230026, China)

机构地区：[1]中国科学技术大学物理学院,安徽合肥230026

出　　处：《物理实验》2021年第10期29-32,49,共5页Physics Experimentation

摘　　要：在居家环境中通过容易置备的器材搭建斜面,将普通5号电池作为待测对象,研究其在斜面上从静止开始的匀变速运动过程.通过手机拍摄视频,结合视频追踪软件Tracker,拟合二次函数得到电池在不同斜面上运动的加速度值,并讨论斜面能够实现纯滚动的条件.构造对称斜面研究了电池沿上、下不同方向运动的加速度及能量损失特点.总结了居家实验课程的线上教学模式以及实验教学效果.In the home environment,an inclined plane was built with easily prepared equipment.A common No.5 battery was used as the test object to study its uniform variable speed movement process starting from static on the inclined plane.The acceleration values of the battery moving on different inclined planes were obtained by fitting the quadratic function with video shot by mobile phone and video tracking software Tracker.The experimental results were compared with the theory,and the conditions where the inclined planes could realize pure rolling were discussed.A symmetrical inclined plane was constructed to study the acceleration and energy loss characteristics of the battery moving in different directions.The online teaching mode and experimental teaching effect of home-based experimental course were summarized.

关 键 词：加速度 视频追踪法 居家实验 TRACKER 

分 类 号：O311[理学—一般力学与力学基础]