This paper deals with the problem of how to skilfully select spring elastic potential energy zero in applying law of conservation of mechanical energy, and makes some analyses combined with examples.

在应用机械能守恒定律时，如何巧选弹簧弹性势能零点问题进行了探讨，并结合实例进行了分析。

youdao

You know, if you want to measure the potential energy of something in a gravitational field, you have to define the zero somewhere, right, because it's arbitrary.

你知道，如果你想测量重力场，中某种东西的势能，你需要，在某处定义一个零点，对吧？

youdao

We have defined potential energy 0 to be zero at infinity, and that is why all bound orbits have negative total energy.

我们规定，无限大时,势能为，这就是为什么所有的,规则轨道总能量为负。

youdao

You know, if you want to measure the potential energy of something in a gravitational field, you have to define the zero somewhere, right, because it's arbitrary. You can set it anywhere you want. It's the same with enthalpy.

你知道，如果你想测量重力场,中某种东西的势能，你需要，在某处定义一个零点，对吧？,因为势能的值是任意的,你可以把它设定在。

麻省理工公开课 - 热力学与动力学课程节选

Energy is NOT limited, when we examine the potential of zero-point energy couple with models of broken parity, energy is infinite in scope.

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