中文摘要：

使用高速摄影仪和计算机图形处理技术对小木球在静止液体中的自由上升运动规律进行研究，获得小木球在静止液体中上升速度的测量值。实验观察到小木球在上升开始后的很短时间内，竖直方向和水平方向速度都会分别达到一个稳定的最大值，此后小木球会保持这个最大值。通过图像处理和运动分解分析，发现小木球在竖直方向做匀速上升运动，在水平方向做匀速圆周运动。与此同时，还对小木球的运动方程进行求解，并与实验所得结果进行了比较，计算结果和实验结果吻合较好。

英文摘要：

The rising of a wooden bah in the static liquid was investigated with high-speed camera andcomputer image processing, and the rising velocity of the wooden ball in the static liquid wasobtained. The results show that both the vertical and horizontal velocity reach stable maximums m a short time after the wooden ball began rising, and the ball keeps rising linearly in the vertical direction and circularly in the horizontal plane, respectively at this maximum velocity. Through computer image processing and motion analysis for the ball, it was found that the ball rises at a constant speed in vertical direction and moves circularly in horizontal plane. At the same time, the motion equations of the wooden ball in the static liquid were solved numerically. Compared with the experimental data, numerical results have a good agreement with experiments.