My wife is a sword god

"What exactly is Mr. Yuan studying?" Qin Feng asked aloud.

Huo Yuan rubbed his chin and replied calmly: "I heard the old man accidentally mentioned when he was drunk that he wanted to build a mobile city."

Qin Feng's eyes widened, Halwei's moving castle?

I didn’t expect that this old man’s ideas were so avant-garde!

He is worthy of being a man who can forge twelve supreme soldiers and build a flying courtyard.

“But since we want to build a mobile city, why would the Elder want to invent something that looks like a cart?

Do you have to push objects of various shapes and materials around on the ground? "Qin Feng raised doubts again.

“The old man’s original idea was to build the city on a cart, just like a cart pulling goods, and the power of the treasure would affect the entire city.

The weight of the city must be extraordinary, so when the old man tried it, he would place cargo on the car that far exceeded the carrying capacity.

But the result of this is often that the car will easily skid and roll over. If it encounters soft soil, the wheels will get stuck in it and cannot move.

The old man suspected that it was a problem with the wheel shape, so he wanted to improve it. " Huo Yuan explained.

Qin Feng nodded and thought to himself: "No wonder the elder has been rubbing various objects on the ground. It turns out that he is trying to find the most suitable wheel."

“However, the old man tried for a long time, but found that the wheels that would not get stuck in the mud could not pull the cargo.

The wheels that can pull cargo are easily prone to skidding and falling into the mud.

Therefore, even though the old man spent a lot of time on this matter, there was no progress. Huo Yuan sighed, his tone a little regretful.

A city that can move is simply a man's romance. As a member of the God's Workshop, he naturally yearns for such novel things.

But who would have thought that this unprecedented research could not even take the first step.

"Hiss~" Qin Feng scratched his cheek, thoughtfully.

Although the old man is ingenious and constantly has novel ideas in his mind, the shackles of the times will inevitably limit many of his ideas.

"Wait a minute, if I can help the old man solve this initial problem, can I in exchange let him help forge the knife as an exception?" Qin Feng's eyes shone slightly.

But after thinking for a moment, his face turned a little ugly again.

"Such things must involve physics-related knowledge. How can I, a man who applied for liberal arts exams because I have more girls, know these things?"

Qin Feng twitched the corner of his mouth. His level of physics knowledge was still at the high school level.

“My high school science teacher didn’t lie to me. If I learn mathematics, physics and chemistry well, I won’t be afraid of traveling all over the world.

It's my fault that I was too young at the time and didn't care about it.

Fortunately, since I studied Wen Sheng Taoism, I remember the physics knowledge in high school very clearly.

I don’t know if this superficial knowledge is enough. "

"Actually, I don't have to give the elder an answer, I just need to provide him with an idea.

Wheels, moving, and sinking into the soil should involve relevant knowledge such as friction and pressure.

Huh? I think I have an idea. "Qin Feng raised his eyebrows, raised his steps, and approached the old man again.

Huo Yuan stretched out his hand, and just as he was about to stop him, a heavy bag of money fell into his hands.

When the words came to his lips, he swallowed them back.

When the senator heard the footsteps approaching, he frowned and cursed: "That little bastard."

Everyone in Shen Gongfang is short of money, which is well known in Daqian.

The little bastards used him as an excuse to sell people's information to get money, which was a private agreement.

The old man has naturally known about this for a long time, but he has always chosen to turn a blind eye.

It's just that he didn't expect that the kid who came today would be so persistent despite being rich and powerful.

"Boy, if you still ask me to forge a knife, give up on it as soon as possible and don't waste your efforts." The old man's attitude was still firm and his tone could not be argued.

But to his surprise, this time the boy in black did not mention the forging of the knife, but asked inexplicably: "Old man, do you know what friction is?"

The elder frowned, not knowing why.

Qin Feng coughed dryly, and without caring about the other party's reaction, he directly memorized the knowledge from the high school physics textbook——

"Well, the so-called friction refers to two objects that are in contact and squeezing each other. When they move relative to each other or have a tendency to move relative to each other, a force is generated on the contact surface that hinders the relative movement or its trend. This is called friction. .

Old man, haven't you ever wondered why the shapes of carriage wheels are round instead of square or other shapes?

Why can a wine glass be pushed easily on a smooth tabletop, but difficult to push on a rough floor?

Why is the old sow doing it in the middle of the night?"

At this point, Qin Feng stopped abruptly.

I almost said it casually.

The elder originally planned to drink Qin Feng away, but when he heard this theory, a certain string in his mind seemed to twitch.

He thought thoughtfully, and then his eyes widened: "According to your statement, is it because circles experience less friction than other shapes under the same conditions?

So it's easier for the car to move forward? "

Awesome, he was able to grasp the key points so quickly. Qin Feng was surprised, but nodded slightly, showing a teachable look.

"Why can the same wine glass be pushed easily on a smooth table but not on a rough ground?" The elder quickly asked the question.

He took the bait. Qin Feng smiled meaningfully and said lightly: "This involves the concept of a friction coefficient."

Huo Yuan and other people from the Divine Workshop not far away originally thought that Qin Feng was rushed back quickly.

But the development of the matter surprised them.

The old man who usually doesn't smile is actually discussing something enthusiastically with the handsome young man in black?

He even danced with excitement?

"What's going on?" Gong Liang, who sensed something strange, walked aside and asked curiously.

"I don't know, go and take a look?" Huo Yuan glanced.

"Let's go."

The rest of the people from the Divine Workshop looked at each other and followed the two bosses.

Only Lan Ningshuang and three others were left there.

"What is Brother Qin talking about with the elder? This is the first time I see that old man so excited." Yang He looked incredible.

Zhang Tiannan nodded. Although he didn't say anything, his eyes were full of curiosity.

Not long after, the group of people in the God Workshop also changed.

Some of them frowned in thought, while others showed a look of joy as if they had suddenly realized something.

There were gasps and exclamations.

Lan Ningshuang and the other two, who could no longer suppress their curiosity, hurried over.