摘要
机械能守恒是力学中的一个重要定律,但关于守恒条件的阐述不同的编者著述却各不相同,那么他们的著述是否等效?本文从保守力、外力做功及参考系三个角度阐述了机械能守恒定律的条件,以期对理解和应用机械能守恒定律有一个全面而清楚的认识。
Law of conservation of mechanical energy is a very important law in Mechanics. But there are dif- ferent expatiations of its conditions in different works. Do they represent the same meaning？ To comprehend it clearly and completely, the conditions for it are analyzed and demonstrated in three aspects： conservative force, work done by extra force and reference system.
出处
《绵阳师范学院学报》
2006年第5期30-32,共3页
Journal of Mianyang Teachers＇ College
关键词
机械能守恒
保守力
做功
参考系
conservation of mechanical energy
conservative force
doing work
reference system
