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气垫导轨仪器在基础力学教学实验中已普遍使用.为了提高仪器的质量,本文讨论检验它的一种方法.假定导轨平面平直,与导轨接触的滑块平面亦平直,导轨平面小孔相同,排列合理,小孔射流在导轨与滑块平面之间能形成均匀的薄气垫层,那么导轨和滑块可调到水平位置.实验时,气垫导轨上滑块运动速度较小,一般在40cm/s左右.则滑块受到气体的阻力与速度成正比 即
The air-cushion guide instrument has been widely used in basic mechanics teaching experiments. In order to improve the quality of the instrument, this article discusses a method of testing it. Assume that the guide rail plane is flat, and the slide contact plane with the guide rail is also flat, and the guide plane hole is the same The arrangement is reasonable, the small hole jet can form a uniform thin cushion layer between the guide rail and the slider plane, then the guide rail and the slider can be adjusted to the horizontal position. During the experiment, the slider on the air guide rail has a small movement speed, generally 40cm. /s or so. The slider is proportional to the resistance of the gas and the speed