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我们知道,在遇到绳或轻杆连物问题时,一般是向着沿绳(杆)和垂直绳(杆)的两个方向分解,沿绳(杆)的分速度就是绳子(轻杆)拉长或缩短的速度,另一个分速度就是使绳子(杆)摆动的速度.此类问题往往在功能问题上会作为隐含条件.下面通过几个实例,谈谈如何挖掘利用这一条件.
We know that in the event of a problem with a rope or light rod, it is usually broken down in both directions along the rope (rod) and vertical rope (rod). The speed of the rope (rod) Long or shorten the speed of the other sub-speed is to make the rope (rod) swing speed of such issues are often function problems as an implied condition.Through a few examples to talk about how to tap the use of this condition.