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除弹簧之外,橡皮筋的弹性是比较好的。把橡皮筋绳与一定质量的小球连接起来,可制成“橡皮筋振子”。在橡皮筋绳的弹性限度内,在要求不很高时,振子离开平衡位置后所受到的回复力,亦可视为与它的位移成正比,方向相反,其振动为简谐振动。橡皮筋,价廉源丰,橡皮筋绳,极易制作。用女同志扎头发的橡皮筋圈就可做成长、短、粗、细不同的橡皮筋绳。将一根橡皮筋圈剪断,就成了单股的;不剪,则是双
In addition to the spring, the elasticity of the rubber band is better. The rubber band rope is connected to a ball of a certain quality and can be made into a “rubber band.” Within the elastic limit of the rubber band rope, when the requirement is not very high, the restoring force received by the vibrator after leaving the equilibrium position can also be regarded as being proportional to its displacement. In the opposite direction, the vibration is simply harmonic vibration. Rubber band, cheap source, rubber band rope, easy to make. You can grow, short, thick, and thin different rubber bands using lesbians’ hair bands. Cut a rubber band, it becomes a single; if not cut, it is double