对纸装置缓慢下降的探讨  

Discussion on the Slow Descent of Paper Device

作　　者：陈群治 李业凤[1] 

机构地区：[1]电子科技大学物理电子学院,成都610054

出　　处：《实验科学与技术》2013年第5期204-206,共3页Experiment Science and Technology

摘　　要：一张纸装置垂直落向地面,在落地之前纸装置将弯曲、变形并震荡、翻滚。文中使用单张A4纸,设计并制作一个缓降装置,使其尽可能缓慢地从2.5 m的垂直高处掉向地面,研究相关参数对下落过程所用时间及下落稳定性的影响。文中的设计类似于拉花的结构,纸的外边沿自由垂下的纸装置,通过改变划痕条数和划痕间距,多次实验,分析了下落过程所受的空气阻力等因素的影响以及位移、速度随时间变化的关系曲线,得到在保持稳定的前提下,纸装置的最佳结构。When a piece of paper device vertical fall to the ground, it will bend, distort, shock and roll before landing. This is known as a phenomenon in daily life. Using a single A4 paper, we designed a slow drop device. It fell to the ground from a 2. 5 m vertical height as slowly as possible. Then the related process parameters on the time and stability of the whereabouts were investigated. This pa- per designed a structure similar to the garland, and the outer edge of paper was placed along the paper device of free hanging down. By changing the scratch number and scratch spacing, we experimented many times. And we analyzed the influence of such factors as air resistance, and the curve of displacement and velocity changes over time during the falling process. Then we got best paper device structure on the premise of stable.

关 键 词：纸装置 下落时间 空气阻力 形状 

分 类 号：O4-33[理学—物理] G642.0[文化科学—高等教育学]