链条桌边下落问题的探究DISCUSSIONS ON THE CHAIN FALLING ALONG THE TABLE EDGE
陈思,李岩松
摘要(Abstract):
链条的力学问题在物理学的发展过程中受到人们的关注,并与实际工程应用有着密切联系。"下落链条"作为典型的模型,经常被用来考察学生对于动量守恒和功能原理的理解和应用。然而,对于链条下落运动的认识依然存在着诸多分歧。本文将讨论"链条桌边下落"这一过程中分离点的问题。
关键词(KeyWords): 下落链条;变质量体系;微元法;飞离
基金项目(Foundation):
作者(Author): 陈思,李岩松
参考文献(References):
- [1]杨元平,高翔.对机械能守恒定律“五性”的理解[J].物理教师,2003(10):4-6.YANG Yuanping,GAO Xiang.Understanding conservation law of mechanical energy from 5aspects[J].Physics Teachers,2003(10):4-6.(in Chinese)
- [2]吴海娜,刘顺,公卫江,等.用微元法巧解软绳下落过程的能量损失[J].物理与工程,2016,26(1):72-75.WU Haina,SHUN Liu,GONG Weijiang,et al.The energy loss of the falling process of soft rope using microelement method[J].Physics and Engineering.2016,26(1):72-75.(in Chinese)
- [3]刘斌.充分发挥习题的作用培养学生独立解决问题的能力[J].物理与工程,2014,24(4):11-19.LIU Bin.To give full play to the role of exercises to cultivate students'ability to solve problems independently[J].Physics and Engineering,2014,24(4):11-19.(in Chinese)
- [4]郑国安.下降链条的能量损失[J].物理教师,2005,26(5):41-42.ZHENG Guoan.The energy loss of the descending chain[J].Physics Teachers,2005,26(5):41-42.(in Chinese)
- [5]于同旭,张文彬,许腾,等.链条下落运动问题浅析[J].自然杂志,2015,37(1):53-60.YU Tongxu,ZHANG Wenbin,XU Teng et al.Discussion of the chain falling movement[J].Chinese Journal of Nature,2015,37(1):53-60.(in Chinese)
- [6]路峻岭,秦联华,任乃敬.关于柔软细绳运动问题中加速度奇点的讨论[J].大学物理,2016,35(12):7-12.LU Junling,QIN Lianhua,REN Naijing.Discussion on the speed singularity of soft string movement[J].College Physics,2016,35(12):7-12.(in Chinese)