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如果物体在三个共点力的作用下处于平衡状态,则代表这三个力的有向线段构成一个封闭的矢量三角形,用矢量三角形法则解题,可避免繁琐的三角函数运算,使求解过程变得简单。
If the object is in equilibrium under the action of three common point forces, the directed line segments representing the three forces form a closed vector triangle. Using the vector triangle rule to solve the problem, tedious trigonometric functions can be avoided and the solution process can be avoided. It’s simple.