用作图法解静力学问题,从精确度看来虽然要比解析法差些,但这种方法仍有它的优点,它能不经繁复的计算很快给出答案,并且是一目了然的答案,所以在工程上有广泛的应用。一、共点力作用下的物体的平衡三个共点力平衡时,因为其中两个力的合力与第三个力必在一直线上,且大小相等、方向相反。从而根据两个力合成的三角形法则,可将这三个力经平移后使它 As a solution to the problem of statics in diagrammatic methods, although it appears to be less accurate than analytical methods, this method still has its advantages. It can quickly give answers without complicated calculations and is a clear answer. , so there is a wide range of applications in engineering. First, the balance of the object under the action of a common point force When three common point forces are balanced, the resultant force of the two forces and the third force must be in a straight line, and the same size and opposite direction. Thus according to the triangle law of two forces, these three forces can be translated to make it