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圆的性质是,以一不动点为中心,以定长为半径在平面内旋转一周,端点形成圆周轨迹.利用圆的性质分析力的大小变化是非常直观有效的方法.具体而言,当判断某力大小如何变化时,以该力的大小为半径作圆,并以圆为参照.若下一状态,该力在圆内,则力变小,反之则变大.以下结合2个实例,浅谈圆在力的合成与分解中的另一种应用.
The nature of a circle is centered around an immovable point, fixed in a circle with a fixed length as a radius, and the end points form a circular trajectory. Analyzing the force variation with the nature of a circle is a very intuitive and effective method. Specifically, To determine how the size of a certain force change, the size of the force as a radius for the circle, and the circle as a reference. If the next state, the force within the circle, the force becomes smaller, and vice versa become larger. The following combination of two examples Another Discussion on the Application of Roundness in the Synthesis and Decomposition of Force.