Bai Gongzi smiled: "How big is the big stone you want to carry?" ”

Teng Yifeng said: "It's almost two zhang long, one zhang wide, the whole big stone, it's too big, the migrant workers can't move it at all, but it's really difficult for us, and we are embarrassed to ask the holy woman to trouble Tianzun, I heard the foreman from Gaojia Village say that Bai Gongzi has a way to move heavy objects." ”

Bai Gongzi laughed: "Haha, such a small stone, with physics knowledge, can be easily dragged away for you." ”

The speaker has no intention, but the listener has the intention.

When Song Yingxing heard this, he frowned, and thought to himself: To move such a big stone? I do know a way to make a big gear out of a giant wood, one vertical, one horizontal, the two gears are occluded, and the vertical gear is rotated by dragging the ox and driving the transverse gear, and the heavy object can be dragged.

But very few people know this method, and such a child in front of me who has no hair will be like this? What is the physics in his mouth? Shall I ask him?

Thinking of this, Ma Daochang, who was in front, greeted Mrs. Bai and Bai Gongzi: "Ah, isn't this Mrs. Bai and Bai Gongzi?" Poor and polite.

The mother and son were also quite happy when they saw Ma Daochang: "Ma Daochang, I haven't seen you for a long time, I heard that you went out to travel on the orders of Tianzun, and now you're back?" ”

Ma Tianzheng smiled: "Fortunately, I have finally completed Tianzun's instructions, and tomorrow I plan to go back to Gaojia Village to meet Tianzun." ”

Madame Bai smiled and pointed to the sky: "Tianzun is coming to the county seat now, you can see it when you look up." ”

Ma Tianzheng was taken aback, quickly raised his head, and sure enough, he saw a low cloud, floating in the sky, he quickly brushed the dust on his body, and bowed his head down: "Disciple Ma Tianzheng, see Tianzun." ”

The dwarf cloud rippled slightly, as if in response to him.

Ma Tianzheng was so happy: Tianzun responded to me!

Just as he was about to say something more, Song Yingxing grabbed his arm: "Ma Daochang, do you know this son?" Please introduce me to me, I have a lot of things to talk to about this son. ”

Ma Tianzheng remembered the key point at this time, and quickly pulled Song Yingxing over, and at the same time introduced Bai Gongzi, it can be regarded as an introduction to Tianzun: "This is from Fengxin County, Jiangxi, Song Yingxing, Mr. Song." ”

"This is the white son of Baijiabao.

When Li Daoxuan heard the words "Song Yingxing", he was immediately overjoyed, he came, he finally came, hahaha, the first scientist in the late Ming Dynasty, this time he was abducted, as long as he came to his field of vision, then he definitely didn't want to leave. I had 10,000 ways to trick him into staying.

Very good, let's let Bai Gongzi and Song Yingxing communicate first, although Bai Gongzi has just learned physics in the second grade of junior high school, it is enough for Song Yingxing to open up a new world.

Song Yingxing hugged his fist at Bai Gongzi, although the other party was almost thirty years younger than him, Song Yingxing still didn't dare to despise it: "This son, I heard you just now that you can use physical methods to move such a big stone, I don't know what method you plan to use?" ”

Bai Gongzi looked at the middle-aged man in front of him curiously, and saw his expression of curiosity, he seemed to be very interested in academic discussion, and he couldn't help but be happy, his physics was too fast, and there was no one in Gaojia Village who could communicate with him, and now there was a person who seemed to be interested in chatting, so why not blow it quickly.

Bai Gongzi smiled and said what he had just learned: "Cogwheels! ”

"Is it a cog, sure enough?" Song Yingxing was overjoyed: "Hey, the idea in the next is to use gears." ”

Bai Gongzi: "Huh? You know gears too? Have you studied Physics in the Book of Heaven? ”

Song Yingxing: "What is the physics chapter of the Book of Heaven?" ”

Bai Gongzi: "I haven't studied it, huh, it scared me, I thought that there were people outside Gaojia Village who knew how to write physics." Hey. ”

Song Yingxing was a little curious: "I don't know what the Heavenly Book of Physics is?" ”

Bai Gongzi: "I can't say this sentence clearly, let's go and study the big stone first." ”

After a while, the group came to the construction site outside the city, only to see a huge stone in the middle of the road, they either have to move this stone, or have to make a detour of the road, there is no doubt that in order for the bus to get up smoothly, the stone is the right solution.

Bai Gongzi asked, "Have you studied how much this stone weighs?" ”

Teng Yifeng replied respectfully: "We don't have the ability to weigh such a large stone, and we don't know its weight. ”

Song Yingxing smiled, and thought to himself: This can only be weighed by Cao Chong's method of weighing the elephant....but the elephant can move, and the elephant can catch the elephant onto the boat, but the stone can't move, and it can't be put on the boat, so it can't be called.

As soon as he thought of this, he saw Bai Gongzi take out the soft ruler used to measure his clothes, measure the diameter of the big head, then took out a pen and paper, brushed and counted for a while, looked up and said, "About 60,000 catties." ”

Song Yingxing: "!!"

Bai Gongzi continued to count on the paper, brushed and brushed, and raised his head after a while: "To move more than 60,000 catties of stones, at least one large gear is needed to make XX diameter, supplemented by XX diameter pinions...... I'll do the math...... Well..... this value is about the same, go and call the blacksmith to make a few gears according to the size I give, which can only be bigger than what I set, not smaller than what I set, otherwise it can't be pulled by two oxen, and it is not strong enough. ”

"Put the gear on one side, pull it with an ox, and on the other side use a worker's iron rod to warp it hard, and you can move the stone away."

Song Yingxing was shocked: I know that I can lift a boulder with gears, but I can't accurately calculate how big a gear to use and how many cows to pull, so I can only make the gears as big as possible, how can this kid calculate so accurately? ”

If you don't understand, you asked, Song Yingxing hurriedly asked: "May I ask Bai Gongzi, how do you calculate the strength of two cows and how big a gear can lift multiple objects?" ”

Bai Gongzi smiled: "The difference between the diameter of the big gear and the small gear can determine the multiple of their increased strength...... Calculate the approximate strength of the two cows and the difference between the diameters of the two gears...... Oops, I can't tell this thing with my mouth, so I'll give you a formula for yourself.

He picked up his pen and scribbled a formula on the paper.

But Song Yingxing couldn't understand it at all, and was stunned for a while.

It's terrible, I always thought I knew everything, but I didn't expect to come here, so I found out that there is a sky outside the sky, and there are people outside the world.

"There's a reluctant request down there, that...... Physics in the Book of Heaven...... I don't know if I can read it in the next time? Song Yingxing's face was a little red: "You can pay a heavy salary under it." ”

Bai Gongzi doesn't care about whether he is paid or not, as long as someone is willing to learn, this thing can be taught casually, this is Tianzun's original words, then the book will be given.

/。 Zero Point Chinese Network]/