视频分析软件Tracker在复摆实验中的应用

Application of the video analysis software Tracker in the compound pendulum experiment

利用视频分析软件Tracker的自动追踪功能,有效地追踪复摆的振动轨迹,描绘出振动的位移-时间曲线,拟合后得到角速度,并计算出振动周期,进而用等效摆长法和直线拟合法计算出重力加速度.

Using the automatic tracking function of the software Tracker,the vibration trajectory of compound pendulum was tracked effectively,and the displacement-time curve was depicted.The angular velocity was obtained after fitting,and the vibration period was calculated.The methods of equivalent pendulum length and linear fitting were used to calculate the acceleration of gravity.