物体的平衡状态是指物体做匀速直线运动或静止,物体的平衡条件是物体所受的合外力为零。虽然基础知识很简单,但由于同学们对力的平行四边形运算方法掌握不熟练或数学知识运用不自如,引起求解困难,甚至解错,使之成为大家学习静力学的难点,下面就针对平衡问题介绍几种常用的简捷方法,以启发同学们的思维,拓展同学们的思路。 The equilibrium state of the object refers to the object doing a uniform linear motion or stationary, and the balance condition of the object is that the external force exerted by the object is zero. Although the basic knowledge is very simple, but because students are not proficient in parallelogram computing power or mathematical knowledge is not easy to use, causing difficulty in solving, or even to make it difficult to learn static mechanics, following the balance of issues Introduce several commonly used simple methods to inspire students’ thinking and broaden their thinking.