Why is the force on both sides of the spring only one force

1. When a spring is extended, there is not only elastic force at both ends, but also mutual tension at any section of the spring. For a light spring, the tension at each section of the infinite number of sections is equal, and its magnitude is recorded as the tension of the spring
the reason why you can't think about this problem is that you don't have a clear idea of the force application object and the force bearing object
a spring is not a particle, it can be regarded as composed of infinitely many particles. When a spring is extended, it is not only the elastic force between the spring and the objects at its two ends, but also the interaction between the internal particles, because when a spring is extended, every part of it will be extended
the same is true for light ropes. A light rope has tension, which means that there is tension between its own particles, not just between the rope and other objects.

2. blockchain projects, similar to traditional projects, also need to solve certain social needs and reflect certain commercial value. It's just that it's a project developed by using blockchain technology and has issued a token based on blockchain technology. Therefore, when we analyze the value of the token, we can also apply the traditional equity investment evaluation method for value analysis.

3. There are two, one is in the thunder continent, but in the island! They all have a sign. It's a yellow dot!

4. Hello, I'm glad to answer for you<
causes of watch st:
1. The watch has not been maintained for a long time
2. There is st inside the watch (it needs to be maintained)
3. There is st outside the watch (it needs to be waterproof tested)
(it is recommended to send the watch to the after-sales Center for inspection and repair!)
if you have any questions, please call the hotline

5. There are stores to sell, direct buy, Casa transmission is next to!

6. Well, a force? How can a spring be stretched when it is forced in only one direction. What you are talking about is to hang the spring on the wall and pull it. It seems that only people give it a force, but in fact the wall also gives it a pull.

7. There is a yellow spot out of the city in Gobi and island. There are two guards there. Go to the grocer and buy a hoe to dig in

8. There's a yellow spot on the top right of thunder level 1, which can be used to get in.
there's also a yellow spot on the side of the island where the wood is sold

9. I feel dizzy ~
what kind of mine are you digging now?
a low level mage will be invisible and go to the master's place to check the money.
check 300W.
you can check it all night ~!

10.

Since it's the other party's responsibility, you don't have to report anything. When the other party's insurance company comes to take photos, they drive the car to the 4S store and ask the other party to repair the car. The other party will ask the insurance company to fix the loss. After fixing the loss, you ask the other party to pay first, and then give him the repair invoice and ask him to leave. The rest is that you have to look after the 4S shop and repair your car. Don't let the 4S shop go black. There are many things you don't pay for (some parts were originally replaced, but they were repaired for you)

How to buy insurance, which is better, hand in hand to teach you to avoid these "pits" of insurance