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所谓运动物体的关联速度问题是指两个(或两个以上)相互关联的不同物体,它们速度各不相同,通常由其中一个物体的速度求另一个物体的速度的问题。对于这种问题,有时会单独命题,有时也可能以此为基础去解决更复杂的动力学问题,所以在高考中往往成为命题的切入点。本文以常见的问题类型为例,探讨如何寻找运动物体间关联速度的关系。关联物体系的组成通常有两种,一是用绳(或杆)连接的物体,二是直接相互接触的物体。下面就针对这两种问题类型分别介绍其求解的办法。
The so-called problem of the speed of association of moving objects refers to the problem that two (or more) different objects are related to each other at different speeds, usually by the speed of one of the objects seeking the speed of the other object. For such problems, sometimes alone proposition, and sometimes may also be based on this to solve more complex kinetic problems, so in the entrance examination often become the starting point for the proposition. In this paper, the common type of problems as an example, to explore how to find the relationship between the speed of movement of objects. There are usually two kinds of related systems, one is the object connected by ropes (or rods) and the other is the object directly contacted with each other. Here are the types of problems for the two solutions to their solution.