滑轮运动问题的深入探讨
收稿日期: 2021-03-22
修回日期: 2021-06-26
网络出版日期: 2022-03-11
基金资助
浙江省自然科学基金( LY19A050002) 资助
The further discussion on the dynamics of pulley
Received date: 2021-03-22
Revised date: 2021-06-26
Online published: 2022-03-11
王国平, 丰莉莉, 穆成富, 李柏青 . 滑轮运动问题的深入探讨[J]. 大学物理, 2022 , 41(2) : 82 . DOI: 10.16854 / j.cnki.1000-0712.210167
In Atwood’s machine, when both pulley and string have mass, the theoretical expressions of tension on both sides of the string and of acceleration of weight objects are derived using momentum theorem. The acceleration a(t) changing with time and the relationship between velocity v and moving distance h under different string weights are discussed.
Key words： Atwood’ s machine; pulley; Newton’ s second law; momentum theorem
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