在运动学问题的研究中,我们会经常碰到几个物体被细绳、轻杆、滑轮等物体连接在一起运动的问题,组成物体系的各个物体之间就存在着一种关系,即约束关系。首先,我们来看一下何为约束。一般地,将对所考察物体的运动起阻碍或限制作用的其他物体,称为被考察 In the study of kinematics problems, we often encounter problems in which several objects are connected together by strings, light poles, pulleys, etc. There is a relationship between the various objects of the composition system, ie, constraints. relationship. First, let’s look at what constraints. In general, other objects that hinder or restrict the movement of the object under investigation are called investigations.