落球法测定重力加速度的新方法

A New Method about Measuring Acceleration of Gravity Falling Ball

在用落球法测定重力加速度的实验中,提出借助数码相机拍视频替代计时器来测定重力加速度的方法.结果显示,由该方法测得的g值与参考值之间的相对误差小于2%,说明借助照相机拍视频方法测定重力加速度的方法是可行的.该方法所需实验器材简单易得,步骤简单,操作性强,是一个可以在教学过程中实施测定重力加速度的新方法.

this paper introduces the method of falling balls in the experiment of measuring acceleration of gravity, with the help of a digital camera video instead of the timer, enhance the accuracy of the measurement time, location accurate, strong operability and repeated viewing, the new method of falling ball experiment error of measuring acceleration of gravity is analyzed.