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我——单摆!是中学阶段典型的物理模型之一.由于我不善言辞,很多同学对我有模糊甚至错误的认识,我感到委屈和冤枉.为此,我要诉冤屈,澄事实,要清白. 例1单摆在摆动的过程中,A、B两点是摆动圆弧的两个端点,O为运动圆弧的中点,则下面说法正确的是( ). A.A、B两点是摆球的受力平衡位置B.O点是摆球的受力平衡位置C.摆球在摆动的过程中没有受力平衡位置
I—the pendulum! is one of the typical physical models in the middle school. Because I am not good at words, many of my classmates have a vague or even wrong understanding of me. I feel wronged and embarrassed. To do this, I want to v. Brat, to clarify the facts, to Innocent. Example 1 Single pendulum in the process of swing, A, B two points are the two ends of the swing arc, O is the midpoint of the arc of motion, the following statement is correct (). AA, B two points The balance point B of the pendulum ball is the equilibrium position of the pendulum ball C. The pendulum ball is not balanced by the force during the swing.