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由运动和力的一些基本规律可知,处于平衡状态的物体,肯定不受任何外力或受平衡力的作用。根据这一点,可以分析物体的受力情况。
From the basic laws of movement and force, we can see that an object in a state of equilibrium is definitely free from any external force or balance. According to this, you can analyze the force of the object.