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用纸带可以做简谐振动的实验,做法如下: 将45厘米左右长的纸带(打点计时器用的纸带即可)的一端,用浆糊贴在铅笔的中间,卷紧后成附图所示形状,将纸卷向左(或向右)拉开到某一位置后放开手,纸卷将左右来回振动,在纸卷上用墨水作个记号点,观察这个记号点的运动便是简谐振动。这个实验比起常用水平弹黄振子有以下几点好处: 附图1.能克服水平弹黄振子振动太快,不易观察的缺点。2.能克服水平弹簧振子振幅衰减太快的缺点。木
The experiment of simple harmonic vibration can be done with tape. The procedure is as follows: One end of a 45-centimeter-long paper tape (which can be used as a ticker timer tape) is pasted with a paste in the middle of a pencil and rolled up into a drawing. In the shape shown, the paper roll is pulled to the left (or right) to a certain position and then released. The paper roll oscillates left and right, and the ink is used as a mark point on the paper roll to observe the movement of the mark point. It is simple harmonic vibration. This experiment has the following advantages over the commonly used level of the yellow vibrator: Figure 1. The drawback that the horizontal vibrator can vibrate too quickly and is not easy to observe. 2. To overcome the shortcomings of horizontal spring oscillator amplitude attenuation too fast. wood