对绳拉船靠岸问题的再探讨

将拉船细绳模拟为刚体，用刚体平面运动的基点法得出了绳上任一点的速度及加速度表达式，对细绳的运动给出了全面而清楚的分析，并给出了细绳上各点速度及方向的一般分布规律。对结果作了分析和讨论。与其他分析方法相比，本分析方法更直观，清晰，简单。

Analysis of the Problem of Tugging a Boat to Shore by a String

Regard the string as a rigid body ,by the method of base point of the rigid body planar motion, we can conclude the formula of the velocity and acceleration of a point on the string .this paper gave the distributions of velocity and direction of a point on the string . the results are analysed and discussed . Compared with other methohd,the method applied in this paper is more direct,clear,simple.