Great Britain had large amounts of coal; however, there were not yet efficient means by which to produce mechanical energy or to power machinery.
英国有大量的煤；然而，当时还没有有效的方法来产生机械能或为机器提供动力。
Mechanical energy rules supreme, and that's dictating where equilibrium lies.
机械能占据主导地位，他决定了平衡的位置。
We didn't even talk about it when we did the conservation of mechanical energy.
我们甚至没有讲过它,当我们运用机械能,守恒定理的时候。
So with this in mind, I feel comfortable to pursue my conservation of mechanical energy.
记住这个，我们能够很放心地,使用机械能守恒定理。
We believe in the conservation of mechanical energy.
我们相信,机械能守恒定理。
When you don't have to worry about criteria like that ordinary, mechanical energy rules supreme, and that's dictating where equilibrium lies.
如果你不担心像这样的要求,通常的机械能就占据主要地位，并且决定平衡位于何处。
When you don't have to worry about criteria like that ordinary, mechanical energy rules supreme, and that's dictating where equilibrium lies.
如果你不担心像这样的要求，通常的机械能就占据主要地位，并且决定平衡位于何处。
So this is the conservation of mechanical energy.
因此这是，机械能守恒。
This is visualizing the process of the conversion of mechanical energy into chemical and electrical energy very nicely.
这一模拟恰到好处地演示了,机械能到化学能和电能的转换过程。
I believed in the conservation of mechanical energy and I overlooked the tension.
我相信，机械能守恒定理，我忽略了张力。
You see it on the general exams for physics, and it's simply a matter of conservation of mechanical energy.
你会在一般的，物理考试中见到，这只是一个，机械能的问题。
Okay, I start off, point A is at a distance h h above this level, and so I apply now the conservation of mechanical energy.
好的我开始了，点A距离这个平面,高度差，现在运用,机械能守恒定理。
Now I want to return to the conservation of mechanical energy.
现在我想回到，机械能守恒。
There is mechanical energy, MGH comes out in the scoops, and what does he notice?
是有机械能，来自于勺子，他看到什么？
And mechanical energy is only conserved if the force is a conservative force.
机械能只有在，力是恒定时才恒定。
So, a small increase in wind speed can lead to a big increase in the amount of mechanical energy you can harvest.
所以，风速的微小增加可导致获得的机械能大幅增加。
We have also the conservation of mechanical energy.
还是机械能，守恒。
I trust the conservation of mechanical energy 100%.
我百分百相信，机械能守恒。
mgh A waterfall is mechanical energy, mgh.
瀑布是机械能。
A dynamo transforms mechanical energy into electricity.
发电机使机械能转换为电。
There must be something fundamentally wrong with the conservation of mechanical energy.
肯定有什么，基础性的错误，这个机械能守恒定理。
And therefore almost every mountaineer has with him or her a device which converts mechanical energy into electricity.
因此几乎所有登山者，都会携带一种，能把机械能转化为电的装置。
It follows immediately from the conservation of mechanical energy.
它紧跟着，机械能，守恒定理而产生。
Kinetic energy can be converted back to potential energy, can be converted back, - but the sum of them — which we call "mechanical energy" — is conserved.
动能可以转化，成为势能，也可以转化为动能，但是总和-，我们叫做的，机械能，是恒定的。
Let's try the conservation of mechanical energy.
让我们试着用机械能，守恒定律解答一下。
Mechanical energy is conserved, because gravity is a conservative force.
机械能是守恒的，因为重力是守恒力。
We only used the concept of mechanical energy, which is conserved.
仅仅利用机械能概念，它是守恒的。
I was so convinced that the conservation of mechanical energy was going to work - that I almost killed myself — - not quite — with this huge, 15?
我坚信，机械能守恒定理，会起作用，我几乎杀了自己-，近乎杀了自己-，那个球大概15公斤？
We have already seen a demonstration in class whereby we converted mechanical energy when someone was rotating, into electric energy.
课堂上我们已经看到,怎样在物体旋转时,将机械能,转化成电能的，演示例子。
So they convert mechanical energy of rotation to magnetic energy, 1 which is not part of 801 so I will not go into how they do that.
它们将旋转的机械能，转化成磁能，这不是801的部分1，所以我不会讲怎么做。
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