考虑绳及圆盘质量时对Atwood 机运动的影响
收稿日期: 2019-06-11
修回日期: 2019-11-19
网络出版日期: 2020-05-17
基金资助
国家自然科学基金( 11774211) ; 陕西师范大学教学改革项目资助
Effect of massive string and pulley on the motion of Atwood machine
Received date: 2019-06-11
Revised date: 2019-11-19
Online published: 2020-05-17
王婕, 贺西平 . 考虑绳及圆盘质量时对Atwood 机运动的影响[J]. 大学物理, 2020 , 39(05) : 62 -65 . DOI: 10.16854 /j.cnki.1000-0712.190258
and a massless string) in textbooks to solve the dynamics problem of Atwood machine. The dynamical methods are
used to describe the motion of Atwood machine with a massive string. The effects on the system motion caused by
the mass of the pulley，the mass of the massive string and the initial position of the weight are analyzed. Furthermore，
the difference between the ideal model described in the text book and the motion of the Atwood machine under
the real conditions is discussed.
Key words： Atwood machine; a massive pulley; a massive string; ; dynamical method
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