| 机械能守恒定律的守恒条件问题 |
| |
| 引用本文： | 何开棘.机械能守恒定律的守恒条件问题[J].鞍山科技大学学报,2005(Z1). |
| |
| 作者姓名： | 何开棘 |
| |
| 作者单位： | 鞍山科技大学理学院 辽宁鞍山 114044 |
| |
| 摘 要： | 对大学物理《力学》中"机械能守恒定律"使用条件的几种说法进行了分析和讨论。从一个质点系所受的外力对其所做的功和内力中的非保守力所做的功引起质点系能量的变化角度,讨论质点系的机械能守恒条件,提出机械能守恒的条件应为质点系的Pext=0,Pint,n cons=0。
|
| 关 键 词： | 机械能 守恒定律 守恒条件 非保守力 |
On conservative conditions in conservative law of mechanical energy |
| |
| HE Kai-ji.On conservative conditions in conservative law of mechanical energy[J].Journal of Anshan University of Science and Technology,2005(Z1). |
| |
| Authors: | HE Kai-ji |
| |
| Abstract: | Several viewpoints concerned the conditions of "the conservation law of mechanical energy" in college physics were discussed.In the view of the energy variation of particle system caused by external force works and non-conservatio force works which is an internal force,the conservation conditions of mechanical energy in the particle system were analyzed and P_(ext)=0,P_(int,n-cons)=0 in the particle system were proposed as the conservation conditions of mechanical energy. |
| |
| Keywords: | mechanical energy conservation law conservation condition non-conservation force |
| 本文献已被 CNKI 等数据库收录！ |
