随着中学新课程方案推广与实施,“有固定转动轴物体的平衡”以其在现实生活中应用的广泛性,再次被列为高考命题考查的重要内容之一·实际上一个物体的平衡,应同时满足F合=0和M合=0·共点力作用下的物体如果满足F合=0,同时也就满足了M合=0,达到了平衡状态;而转动的物体只满足M合 With the promotion and implementation of the new curriculum program in middle schools, “the balance of objects with fixed rotary axes” is once again listed as one of the important contents of the college entrance examination proposition examination with its wide application in real life. In fact, the balance of an object, Should satisfy F = 0 and M = 0 • At the same time, if the object under the action of the common point force satisfies F = 0, it also satisfies M = 0 and reaches the equilibrium state; and the rotating object only satisfies M