也谈机械能守恒定律与功能原理

On the Law of Conservation of Mechanical Energy and Work-energy Principle

阐述了机械能守恒定律是能量转化与守恒定律在力学中的具体体现,是力学中的一条独立定律,可完全表述成遵从相对性原理的形式;现行力学或普通物理教科书中的"功能原理"应改为"机械能定理",同时指出了一些文献在涉及该问题时所存在的不妥之处.

It is demonstrated that the law of conservation of mechanical energy is the form of law of conserva tion and conversion of energy in mechanics. It is also an independent law of mechanics and can be expressed as the form of relativity principle of mechanics, and that work-energy principle should be replaced by theorem of me chanical energy in the existing textbooks of mechanics and general physics. At the same time, some inappropriate parts existing in some literature are pointed out.