Rising: Ten Thousand Years Chapter 102: ：Gravity moment
"You...you..."
Lin Xiufeng was too angry to say a word. Pointing at the students in the classroom, and then looking at Li Zhen:
"Li Zhen, hello Li Zhen. This is your Kyushu Academy of Sciences, hehehe, I have seen it. Take your ignorance as capital? Hehe, amazing."
Li Zhen sat there with a sullen face and didn't say a word.
Qin Enze became furious, kicked over the table and stood up: "You are discussing academically here, even if you are wrong, we will cooperate with you, because you are sent by the imperial court, and everyone does not want to hurt your face. But what qualifications do you have to say that Master Li is wrong here? What qualifications do you have to criticize the Kyushu Academy of Sciences here? You don’t admit defeat, do you? You don’t think you’re wrong, do you? Okay, let me explain to you the seniority in your eyes. Academic, and the low-end in our eyes cannot be in the low-end basic things.”
After finishing speaking, Qin Enze walked up to the podium with a pipe in hand, looked at Lin Xiufeng and said:
"Let me tell you, what you said in the whole class just now is nonsense. What about the speed of free fall, which is determined by whose weight is greater? I will tell you the theorem of free fall, and you should remember it: The object is stationary when it starts to fall, and its initial velocity V=0. If the initial velocity of the object is not 0, even if it falls vertically, it cannot be regarded as a free fall.
During the falling process of an object, it is no longer subject to any external force, including air resistance, except for gravity.
When any object is in free fall at the same height, the falling time is also the same. "
"Remember? It's the same. It's the same. The acceleration of any free-falling object at the same place is the same, so the free-falling movement at the same place is also the same. The free-falling speed will only change according to different geographical conditions. "
Lin Xiufeng laughed wildly when he heard this: "Hahaha, it's nonsense. Let's do an experiment right away. You don't need to verify it. You can even think of it. The same volume of cotton and the same volume of iron have different weights. So is the speed of free fall of cotton the same as the speed of free fall of iron? Who told you this stupid theory?"
Lin Xiufeng looked at Li Zhen mockingly.
Qin Enze sighed helplessly: "How should I explain it to you? Your theory, no, it should be the cognition of Kyushu as a whole. In fact, it should have been overturned long ago. This is a self-contradictory law. "
"Contradictory? Hahaha, is that so?" Lin Xiufeng looked at Qin Enze disdainfully.
Qin Enze sighed: "Okay, just take what you said, let's make an assumption. Suppose the weight of cotton is 4 catties, the weight of iron is 8 catties, and the volumes are the same. The acceleration of cotton falling is 4, Iron has an acceleration of 8. It looks like iron falls faster, doesn't it?"
Lin Xiufeng nodded, sneered, and said nothing. He wants to see what this ugly, scarred monster can say.
Qin Enze said again: "But have you ever thought about it? What if cotton and iron are tied together? Then, the acceleration of the iron that falls fast will be dragged down by the cotton. When the two are together, they will The constant velocity of the will become the same. You have no problem with that."
Lin Xiufeng imagined in his mind that cotton and iron were bound together. Indeed, because they became one, although the speed of cotton was 4 and the speed of iron was 8, they would indeed become the same. Huh? Strange, how did it become the same again?
"Hehe, don't use this word game, brain teaser to turn black and white. What does this prove?"
Qin Enze slapped his thigh: "So, don't you still understand? The speed of cotton is 4, and the speed of iron is 8. If they are tied together and fall, the falling speed of their entire system will become Speed between 4-8."
Lin Xiufeng's expression became suspicious: "What does this prove?"
Qin Enze smiled wryly and said, "Why don't you understand? The falling speed of their entire system is combined to be between 4 and 8. However, the weight of cotton is 4, and the weight of iron is 8. If If it is affected by weight, then their falling speed should be 4+8=12. Their speed should be above 12. Not between 4 and 8. This is a self-contradictory situation.”
"This..."
Lin Xiufeng's expression became weird, as if he had seen a ghost. The whole person fell into a daze, and kept muttering:
"This...how is this possible. Yes, if the speed of free-falling objects is determined by weight, then their speed should be the sum of the weight and speed of the two. Why is this... ...How could this happen."
He is stupid. The law of free fall, which is common throughout the world and has been passed down for hundreds of thousands of years, has been overturned. The rate of decline of cotton and iron was overturned...
You can't explain it all, and the answer turns out to be self-contradictory.
Qin Enze said again: "So the falling speed of an object is not determined by its weight. The speed of a free-falling body changes at a uniform speed. The falling speed of an object is proportional to time, and the distance it falls is proportional to the square of time. The acceleration of a falling object has nothing to do with the weight of the object and has nothing to do with the mass of the object."
Lin Xiufeng said gruffly, "Then... what does that have to do with it?"
"Gravity. I said it is gravity. Free fall is only changed under the influence of gravity. So I said that the speed of free fall can only be determined by gravity, or by the geographical environment. Objects of different heights, The speed of free fall is different."
Lin Xiufeng froze on the spot as if struck by lightning.
His mind is still full of that question, why?
It's really strange...
If it was a direct experiment, Lin Xiufeng might not approve it. However, Qin Enze gave an example to illustrate that an extremely terrifying contradictory assumption directly drove Lin Xiufeng crazy.
Why?
Li Zhen sat below and watched, sighing silently in his heart. The faculty sent by the imperial court is really disappointing.
Do you still want them to teach? If you let them teach again, the seeds you cultivate will not be the seeds you want. Instead, another mass production of the "Ancient Science Scientist" has been completed.
Li Zhen hesitated.
Lin Xiufeng was also surprised that after waking up from the contradiction of thinking, he was not angry, and asked Qin Enze again: "I have another question that has troubled me for a long time, I wonder if you can explain it. "
"You said?"
Lin Xiufeng looked at Qin Enze expectantly: "Why does the quartz clock run out of power ~IndoMTL.com~ or when the mainspring stops due to lack of power? The seconds pointer always stops at the nine o'clock position."
Qin Enze was stunned for a moment, then looked at Lin Xiufeng suspiciously, who knows why he has such a big brain. Such a tough person can skip the topic of free fall before. incredible.
"I haven't researched this question. Brother Jinghong, please answer."
Liu Jinghong stood up and looked at Lin Xiufeng with disdain: "This question is actually very simple, and it is also a daily phenomenon in life, but it is probably an unsolved mystery to you. The quartz clock is out of power Why does the second hand always stay at the nine o’clock position when the spring is running out of power, or when the power of the mainspring is exhausted? Because the position of 9 on the clock is most affected by the resistance of the gravitational moment.”
Lin Xiufeng looked at Liu Jinghong in astonishment, never expecting that he could explain this phenomenon to himself.
This phenomenon was discovered by Lin Xiufeng decades ago when he was still young. At that time, quartz clocks were popular, and he found that every time the quartz clock stopped, the second hand actually pointed to 9. No matter how many times you try, this is the ending.
This problem has troubled him for decades, and he has been unable to figure it out. He tried to understand it, but he couldn't understand it at all. I also asked many university scholars, but there is no reasonable explanation...
Some people say, because of metaphysics.
Some people say that because the number 9 is very unique, and 9 represents the extreme of numbers, the pointer will always point to the extreme of numbers.
Some people also say that this is due to the magnetic field.
But Lin Xiufeng knew that none of these answers were correct!
Unexpectedly, the irritable Liu Jinghong explained this phenomenon in one go.
Lin Xiufeng looked at Liu Jinghong excitedly: "What is gravity?"