RCF=g is the relative centrifugal force, measured in gravity, which is a multiple of the acceleration of gravity.

If the motors r and g are known, the rpm can be found, and conversely, if r and rpm are known, g can also be found.

For example, if you take a known value of the radius of r on the r scale and a known value of relative centrifugal force on the g scale, the extension of the line between the two points is the rpm at the intersection of the rpm scale.

If the known g-value is to the right of the g-scale, the value to the right of the rpm scale should be read, otherwise vice versa.

g and rpm can also be converted using the following formula:

Relationship between centrifugal force g and speed r/min of motor:

centrifugal force (F);

The centripetal force subjectes an object to an attraction directed towards a central point, or repulsion, or any action that tends towards that point.

Centrifugal force can be explained as a tendency of an object to maintain its "definite amount".

The difference between them is that the centripetal force is in an inertial frame of reference, while the centrifugal force is a force in a non-inertial frame.

Formula: F=mω2r

ω: rotational angular velocity (radians/sec);

r: the distance of the rotating body from the axis of rotation (cm);

m: particle mass;

Relative centrifugal force (RCF);

RCF is the multiple of the actual centrifugal force converted into gravitational acceleration;

g is the acceleration due to gravity

The same rotation is equal to 2π radians, so the angular velocity of the rotor is expressed in terms of the number of revolutions per minute (revolutions per minute:

Centrifugation is expressed in r/min.

Separation Factor Calculation Formula:

RCF=F centrifugal force/F gravity=

Note: The rpm should be converted to rpm/sec

For example: a motor with a diameter of 1000mm and a speed of 1000 rpm,

The segregating factors are:

=560

So......

G=？

At G = 1500, any metal that can be cut theoretically.

Whereas, the centrifugal force does not change.

Of course, the premise is that the drill bit is strong enough.

From to Formula:

The results can be obtained:

WHEN THE DIAMETER OF THE DRILL CLAMP IS 50MM

RPM (rotational speed) = 60000.

LIU CHI'S HAND SPEED IS MOVING AT HIGH SPEED ON THE KEYBOARD, AND IF HE WANTS 60,000 RPM, IT IS ALSO A VERY BIG PROBLEM, ESPECIALLY ON A MOTOR WITH A DIAMETER OF ONLY 200MM.

Therefore, Liu Chi decided to cancel the power generation device and directly use direct current.

Once again, the magic change is carried out.

......

Time is like flowing water.

'Ring, ring, ring......' A phone ringing interrupted Liu Chi, who was doing experiments.

"Hello?"

"Liu Chi, what you asked us to help with last time has already come to fruition. Chen Luguang's voice came to Liu Chi's ears from his mobile phone.

Liu Chi couldn't think of what happened last time.

"What?"

"What happened last time?"

"It's your apprentice Zhou Meng's business, why, you forgot about it after so much time?" Chen Luguang asked back.

"I'm doing an experiment, I didn't think about it all of a sudden, what's wrong? Is there any hope?" Liu Chi came back to his senses and asked with a suppressed heart.

"There is a plan at the Kong X General Hospital, and the success rate of discussion/deduction has reached 75%. ”

"Really, that's great, do I have something to prepare?" asked Liu Chi happily.

"I asked Zhou Meng to go over and check it in person to confirm whether there was any discrepancy with the case form, and if the error was too large, she would have to re-diagnose. ”

"When are you going?" asked Liu Chi anxiously.

"On your schedule. ”

"The sooner the better. ”

"You can go over when you're ready, I'll give you a call, and you can go straight to her." Chen Luguang said: "I have already explained it to her." ”

"Good. ”

"1391235XXX, named Zhang Miao, is the vice president of Kong X General Hospital. ”

"Okay, I'll contact her when I get back. ”

"Okay, feel free to contact me if you have any questions. ”

"Good!"

"......" After Liu Chi hung up the phone, he thought about it, and finally stopped what he was doing and called Zhou Meng: "Girl, where is it?"

"I'm in my sister-in-law's office. Zhou Meng's crisp voice came out of the phone.

"You free up your time tomorrow and come with me to Empty X General Hospital. Liu Chi said directly.

"What are you doing at Kong X General Hospital?" Zhou Meng asked suspiciously.

"Don't you want to be a pretty little sister?" Liu Chi said half-jokingly.

"......" After a long while, Zhou Meng's trembling voice came out again: "Can it work?"

"According to your previous case list, the success rate is 75%. Liu Chi comforted: "Don't worry, there should be no problem, no, Brother Chi will use money to smash it, we are not short of money." ”

"Well, thank you, Brother Chi. Zhou Meng nodded heavily.

"Okay, that's it, you take advantage of the time today to deal with all the things you have to do in the past few days, although I will check it tomorrow, but the time may not be short. ”

"Recently, my brother has been out for something, and he may not be able to come back in a short time. ”

"Brother, where are you going?"

"The above project, go to do technical research, and wait for Brother Chi to finish handling the matter at hand and leave, there is more urgency. ”

"Uh-huh!"

"That's it, I'll contact the X General Hospital first. ”

“......”

Liu Chi hung up Zhou Meng's phone and dialed Zhang Miao's phone.

"Hey, hello!" After the bell rang seven or eight times, a middle-aged woman's slightly old voice came into Liu Chi's ears.

"Hello, is it Academician Zhang Miaozhang from Kong X General Hospital?" asked Liu Chi.

"I'm Zhang Miao?"

"Hello, like this, I am Zhou Meng's brother. Liu Chi explained briefly and said, "Just now my friend told me that the markings on her face can be cured by your hospital, and he asked me to contact you." ”

"Hello, hello, Zhou Meng's case has been discussed by our experts many times, and if it is based on the case information you provide, there is still a great certainty that it will be cured. Zhang Miao instantly became enthusiastic.

"That's great, thank you. Liu Chi thanked.

It's not strange to have many people!

Anyway, thank you first!

And there will be no shortage of meat.

"You're welcome, the possibility of a cure is very high, but because the case file you provided is not our hospital's own file, it is best to let her come to our hospital in person for a comprehensive examination and decide which method to choose. ”

"I know, my friend told me just now, is it convenient tomorrow? If it's convenient, I'll bring Zhou Meng over tomorrow for inspection. Liu Chi said a little anxiously.

"Yes, you can go directly to Kong X General Hospital, just call me directly when you arrive, the address is in Xidiaoyutai, Haidian District, do you know how to go?"

"You know, then I'll be here tomorrow morning, around 10 o'clock. ”

"Okay, no problem... You contact me then. ”

"Thank you, Dean Zhang. ”

“......”

After Liu Chi hung up the phone, when he confirmed that he had nothing to explain, he continued to modify the motor.

After getting off work in the afternoon, Liu Chi told Ye Yuxin about taking Zhou Meng to Kong X General Hospital tomorrow.

The next day, Liu Chi took the two of them and went straight to the Kong X General Hospital.

Nine fifty.

Liu Chi met Vice President Zhang Miao.

She is a middle-aged woman who is about 1.8 meters tall, dressed in white, and looks rich.

"Hello Dean Zhang, I'm Liu Chi. Liu Chi shook Zhang Miao's hand with a smile on his face.

"Hello Mr. Liu. Zhang Miao saw that Liu Chi was so young, glanced at the license plate, and then looked at the other two, and gasped, which bigwig's relatives are this?

Don't be so high-profile.

Aren't you afraid that netizens will shoot you on the Internet and spray you to death?

But when you think about it, it doesn't seem right.

If it is a relative of a big man, it should be impossible for the above to intervene directly, and it is impossible to drive a car with this license plate.

Such a car is not something that can be driven if you want to.

"This is my daughter-in-law Ye Yuxin, this is Zhou Meng. Liu Chi introduced.

"Hello Dean Zhang. Zhou Meng said obediently.

"Hello. Ye Yuxin nodded with a smile.

"You're welcome, there are a lot of people, let's talk in my office. Zhang Miao is not a person who has never seen the world, so she stopped the doubts in her heart, quickly calmed down, and took the three of them back to her office.

“......”

"Mr. Liu, regarding Zhou Meng's condition, if there is not much discrepancy with the file you provided, we are very sure that it will be cured. After Zhang Miao sat down the three of them, they poured a glass of water and said.

"That's troublesome Dean Zhang. Liu Chi said after taking a sip of water.

"I'm now asking the attending doctor Li Yuhong to come over and ask her to take Zhou Meng for a re-examination first to determine what method to use. ”

"Thank you. ”

Zhang Miao picked up the phone on the desktop and said a few words.

Five minutes later.

A female doctor who was nearly 1.7 meters tall, wearing a large mask, and looking slender in white clothes, walked into Zhang Miao's office.

"Dean Zhang, are you looking for me?"

"Director Li, this is Zhou Meng, please take her for a comprehensive examination first. Zhang Miao pointed at Zhou Mengdao.

"Okay. Li Yuhong saw the three of them, a trace of surprise flashed in her eyes, and she nodded: "Your name is Zhou Meng, right?" ”

"Hmm!" Zhou Meng nodded honestly, his eyes involuntarily drifting towards Li Yuhong.

"Director Li, I'm sorry for you. Liu Chi hurriedly stood up and said very politely.

"It's okay, the heart of the doctor's parents, such a cute little girl, with a slap on her face, is indeed a bit unlikely, rest assured, we will definitely find a way to help heal." Li Yuhong looked at the well-behaved and comfortable Zhou Meng, squinted and smiled.

"Thank you, Director Li. ”

"I'll take Zhou Meng to check first, the time can be longer, about four or five hours, if there is anything you can go and get busy first, and then you can pick up Zhou Meng." Li Yuhong explained.

"Okay. ”

After Zhou Meng was taken away, Liu Chi chatted with Li Miao for a few minutes, then said goodbye, and prepared to go out for a walk, and come back when the time came.

Four/five hours can't be stupid and wait.

And people are also busy, but they don't have time to spend with themselves.

......

Some office.

"Dean, regarding Zhou Meng's case, I have arranged for Director Li Yuhong to preside over the treatment and try my best to cure it. Zhang Miao said.

"Is it worth it, with such a large resource?" asked an old man next to him, a little dissatisfied.

"Academician Chen, this matter is directly assigned above, in fact, this case file is not only obtained by our hospital, but also by the University of Science and Technology, Xiehe, and Yenching Medical Sciences...... As long as it is a third-class hospital or above, it has been obtained. Zhang Miao turned around and explained to the leader.

"What???" The old man was stunned, a little incredible, opened his mouth and said nothing in the end.

"I don't know who Liu Chi is, but his identity is definitely not ordinary, he just came to three cars, his license plate number is Beijing V0002X, and the other two are both

"If I'm not mistaken, it should have been opened by the bodyguards. ”

"......" A burst of inhalation sounded in the conference room.

"The background is hard?"

"Probably not. ”

"Okay, don't discuss it, this time it's the task arranged above, go all out, and cure the patient at all costs. At this time, Dean Wang Han, who had not spoken, directly interrupted everyone's discussion.

"Dean?"

Several people in the "......" conference room all shifted their puzzled eyes to Wang Han.

Wang Han looked around, staring at himself one by one, it seemed that he couldn't explain clearly, so he said: "That girl is only 18 years old, she is a doctoral student in computer science at X-Bridge University who has just obtained her graduation certificate, and her family has immigrated, but she retains her nationality." ”

"She's only 18?"

"At the age of 18, he was a Ph.D. student in computer science at X-Bridge University?" The old man was a little dumbfounded: "You still graduated?

"Yes, she just got her graduation certificate, and she came back immediately, which shows her patriotic feelings, and this alone is enough for us to try our best to cure people. ”

"Are you sure?"

"Sure!"

"Then I'm okay with that. The old man put away his thoughts.

Wang Han glanced at the old man, and finally said: "You are not in the scientific and technological world, you don't know the influence of Liu Chi, because of the need for secrecy, you don't need to know for the time being, if you want to compare it, his importance is above me." ”

"You also heard the license plate that Dean Zhang said just now, this is the security specifications given above, and it is his importance to the scientific and technological community, not his background. ”

"Understood. Hearing Zhang Han's words, two dissatisfied ones were swept away in an instant.

“......”

Five hours later, Liu Chi returned to Kong X General Hospital on time.

"Dean Zhang, how is it?" Liu Chi looked at Zhang Miao holding the inspection report, glanced at the happy Zhou Meng, had a score in his heart, and asked.

"It's not a big difference, and it's a little better than we expected, and the success rate is very high. Zhang Miao glanced at Zhou Meng, and finally said to Liu Chi.

"Really?" Liu Chi's face flashed with joy.

"Hmm!"

"That's great, girl see, don't worry about it now, you can tie up your hair in the future." Liu Chi happily said to the other side of the week.

"Uh-huh!" Zhou Meng's eyes began to mist out.

"Okay, you're all adults, you want to cry? Liu Chi made up for it with a knife, which directly made Zhou Meng's face dye red powder, and he was embarrassed to want to hit someone.

"Sister-in-law, you see Brother Chi bullying me again. ”

"I'll help you clean him up when you get back. Ye Yuxin stroked the green silk of next week's dream: "Treat it well, and my sister-in-law will take you to play when I go back." ”

"Thank you, sister-in-law!"

"Dean Zhang, when do you think it is appropriate to start treatment? Is there anything that needs our cooperation?" Liu Chi glanced at the two women who were whispering, and finally moved his gaze to Zhang Miao.

"You don't need to prepare anything, as long as you are ready, you can start the treatment, you see if there is anything to deal with? After all, the treatment time will not be short. ”

"......" Liu Chi turned his head to Zhou Meng and said, "What about you, girl, is there any problem?"

"Nope. Zhou Mengzhi nodded.

"By the way, Dean Zhang, how long will this treatment take?"

"It depends on the recovery later, but it is conservatively estimated that the hospitalization time is about 15 days, and there should be a recovery period of about a month later, and you should come to the hospital for regular check-ups. Zhang Miao thought about it for a while and said.

"Zhou Meng, you discuss it with your parents at night. ”

"Dean Zhang, what about the cost?" Ye Yuxin, who had been silent, spoke.

"The cost is estimated to be quite high, so you have to be mentally prepared for this. ”

Liu Chi turned his head to look at Zhang Miao.

"It should be more than 500,000. ”

"So many?" Zhou Meng shrunk his neck.

"It's fine. Ye Yuxin looked at Zhou Meng and said, "With your brother and sister-in-law here, you can treat it with peace of mind." ”

"Hmm. ”

Liu Chi communicated with Zhang Miao for half an hour, and decided to bring Zhou Meng to start treatment the day after tomorrow, and leave Zhou Meng to deal with some private matters tomorrow.

After confirming that there was no problem, Liu Chi left with Ye Yuxin and Zhou Meng.

At night, Zhou Meng hid in the quilt and picked up his mobile phone to call his mother Jiang Xueyue, who was far away in Europe!

"Mom!"

"Girl, do you miss your mother?" Jiang Xueyue asked with concern: "Are you used to it in China?"

"No, Brother Chi and sister-in-law are kind to me. Zhou Meng rolled over and snorted a few times.

"That's good, last time your father said that you lived directly in Liu Chi's house, is it convenient?" Jiang Xueyue asked.

"It's convenient, Brother Chi's parents can recognize me as a daughter. Zhou Meng raised his neck and said arrogantly.

"That's good, just get used to it. Jiang Xueyue turned her head and said, "Is there no money to use?"

"Yes? ”

"Really?"

"Hmm. Zhou Meng nodded and said, "Mom, let me tell you something." ”

"What's the matter?"

"Brother Chi helped me find a relationship, saying that he could cure the scar on my face and treat it the day after tomorrow, and he might not be able to call you and his father for a long time. ”

"Can it really be cured?" Jiang Xueyue frowned.

"Really, Brother Chi took me for a check-up today, and said that there is a high chance that it can be cured, more than 70%. ”

"Which hospital?"

"Empty X General Hospital. Zhou Meng said a little bit to show off.

"Really? Liu Chi has a relationship over there?"

"Really. ”

"The cost should be very expensive, right?" Jiang Xueyue added after speaking: "As long as you can heal your face, you don't have to worry about the cost of medical treatment, your parents will find a way." ”

"The medical expenses have been solved. ”

"How can this be, rest assured that my parents will find a way, I originally wanted to wait another year, when my parents earn enough money, and let you be treated in Europe at that time, but I didn't expect you to run back to China now. ”

"It's about 500,000, don't worry, this money is a drizzle for Brother Chi. After Zhou Meng finished speaking, he added: "Besides, I am his apprentice and sister, and when I am cured, I will work in Brother Chi's company." ”

"It's only 500,000?" Jiang Xueyue was taken aback, and was stunned for a while before asking, "Really, it's only 500,000, you didn't lie to your mother." ”

"Well, what Dean Zhang said in front of Brother Chi, it was about 500,000. Zhou Meng is sure to be authentic.