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运动的合成与分解,是曲线运动的重要内容之一,也是解决平抛运动最重要的方法,同时在“牵连速度”问题中,速度合成与分解方法更是显示出它的重要作用。本文通过举例分析,介绍运动合成与分解在“牵连速度”中的应用。一例题详解如图1所示,一个人在水平的岸上,以速度v0通过光滑的定滑轮拉一小船靠岸,当绳子与水平方向成θ角时,求船的速度。
The synthesis and decomposition of motion is one of the important contents of curvilinear motion. It is also the most important method to solve the flat-throwing motion. At the same time, the method of speed synthesis and decomposition shows its important role in the problem of “implicated speed ”. This article through the example analysis, introduces the movement synthesis and the decomposition in “implicates the speed ” the application. An example of the problem is illustrated in Figure 1, a person on the level of the shore, the speed of v0 through a smooth fixed pulley pulls a small boat to shore, when the rope and the horizontal direction of the angle θ, seeking speed boat.