摘要
为了测出篮球在一般投篮过程的空气阻力系数,使用摄像机拍摄篮球竖直下落的全过程,并用软件将视频分解为帧图像,得到篮球下落的坐标和时间实验数据.用Matlab比较理论图线和实验所得的图,最终确定空气阻力系数近似值k=0.5±0.03.
In order to measure the air resistance coefficient of basketball, the video camera is used to shoot the whole process of falling vertically of a basketball. Some software is used to divide video into frames of picture, which help us to get the experimental data of a basketball falling with the time and the coordinates. By comparing the theory chart with the experiment chart with Matlab, approximation of the air resistance coefficient is determined to be k=0. 5±0. 03.
出处
《物理与工程》
2012年第3期31-33,共3页
Physics and Engineering
基金
广西教育厅自然科学研究项目(基于MATLAB的篮球最佳投掷角度的研究).项目号:201106LX303
关键词
篮球
落体
空气阻力系数
MATLAB
basketball
falling body
air resistance coefficient
Matlab
