Then he tries to tie the rope around three of its legs.

VOA: special.2009.02.16

So, a massless body cannot have a net force on it, because the acceleration of the rope cannot be infinite.

所以没有质量的物体不会受到力,因为绳子的加速度不可能是无穷大

耶鲁公开课 - 基础物理课程节选

you're looking for that equal and opposite forces acting at two ends of the rope.

你就得求出作用在绳子两端的,大小相等方向相反的力

耶鲁公开课 - 基础物理课程节选

He invented the skill of throwing a special rope called a lasso over a cow's head to catch wandering cattle.

VOA: special.2011.06.11

You feel the thrill of having made it to the top and the wind bracingly striking your chin and you feel the satisfaction and you've got the memories of having almost died when the rope broke before.

你感受到登顶的兴奋,风吹袭你的脸颊,你获得满足感,你记得差点死去,当绳子断掉时。

耶鲁公开课 - 死亡课程节选

The belayer then gives more rope up to the lead climber as he moves up the rock.

VOA: special.2009.12.09

The rickety bridge is one that's kind of a rope bridge.

摆桥是索桥的一种。

耶鲁公开课 - 心理学导论课程节选

I lighted my lantern, and found that I was perched on a narrow ledge, almost at the end of my rope literally and figuratively.

VOA: special.2009.12.07

So, tension on the rope is 6 Newtons.

所以绳子的张力是 6 牛

耶鲁公开课 - 基础物理课程节选

In another event, the cowboy throws a rope around the neck of a young cow.

VOA: special.2009.02.16

That is called the tension on the rope.

那就是绳子的张力

耶鲁公开课 - 基础物理课程节选

These devices use rope-like material to carry movement from the shoulder to the prosthetic arm.

VOA: special.2009.03.10

When you say the rope is under tension being pulled from both sides by a certain force, the tension is not 0 just because this T and that T cancel.

当绳子被绷紧,即两端被拉伸时,拉力并不为 0,因为这个 T 和那个 T 相互抵消了

耶鲁公开课 - 基础物理课程节选

The lead climber attaches his rope to devices in the rock as he climbs up.

VOA: special.2009.12.09

Does that forces us to say, "Ah, so it's not ?" the same rope at the end as the beginning."

那我们是不是就必须说,“啊，这不是一开始那根绳子了“

耶鲁公开课 - 死亡课程节选

This nest is made up of thousands of pieces of bamboo tied together with the kind of brightly colored rope usually used by mountain climbers.

VOA: special.2010.08.13

Suppose I had a rope, that stretched from that into the room, all the way across-- to this end of the room.

假设我有一根绳子，从屋子的这一端，一直伸展到-,屋子的这一端。

耶鲁公开课 - 死亡课程节选

We run a tight rope daily, balancing a pile of books on the head.

VOA: special.2009.06.28

So, massless bodies will always have, like a massless rope, equal and opposite forces on the two ends.

所以无质量的物体,比如这个绳子,两边所受的力永远都相等

耶鲁公开课 - 基础物理课程节选

The nucleus contains rope-like strands of DNA that carry the information.

VOA: special.2010.03.23

Whenever you're asked on a problem, "What's the tension on the rope?"

不管什么题目问你,"绳子的张力是多少"

耶鲁公开课 - 基础物理课程节选

He was tied to the spacecraft by a long rope.

VOA: special.2009.06.24

We know there is no thing called a massless rope, but most ropes have a mass, but maybe negligible compared to the two blocks you are pulling, so we'll take the idealized limit where the mass of the rope is 0.

我们都知道无质量的绳子是不存在的,是绳子就有质量,但是相比于这两个物体就可以忽略不计了,所以我们有了这个理想的条件,即绳子的质量都是 0

耶鲁公开课 - 基础物理课程节选

There was such a large crowd that a ship's cable, a heavy rope, was stretched across the portico to separate the crowd from Jackson as he took the oath and delivered his inaugural address.

VOA: special.2009.01.19

kg is being pulled by the rope on the right with a force that I'm going to call T, which stands for tension.

千克的物体受到绳子向右的一个拉力,我称它为 T,也就是拉力的意思

耶鲁公开课 - 基础物理课程节选

Death waited ever hungry. Death had the hungriest stomach of all. Koskoosh listened to other sounds he would hear no more: the men tying strong leather rope around the sleds to hold their belongings;

VOA: special.2010.02.27

The rope is being pulled backwards by this guy, the T.

绳子也会被这个物体朝反向拽,拉力也是 T

耶鲁公开课 - 基础物理课程节选

Each trawl is basically a rope strung with twenty-five lobster traps - wire cages,each the size of a big trunk.

VOA: standard.2010.07.20

If your plan is to accelerate a 3 kg mass with an acceleration of 2 meters per second, you better have a rope that can furnish that force and it can take the tension of 6 Newtons.

如果你想用 2 米每秒平方的加速度,去拉一个 3 千克的物体,那么你就需要一根能提供拉力的绳子,并且它能够承受 6 牛的张力

耶鲁公开课 - 基础物理课程节选

We'll give it a name, but by linking that T to that T, we can also figure out the same T must be exerted on this one by Newton's third law, because if this block is the only one that could be pulling this rope with T.

我们先给它命个名,把这个 T 和那个 T 联系起来,利用牛顿第三定律,我们可以知道这个 T 也一定作用在这个物体上,因为如果这个物体是唯一,受到绳子拉力 T 的物体

耶鲁公开课 - 基础物理课程节选