-
According to any theorem, the speed is the same.
The air resistance is directly proportional to the velocity of the object. and not the mass of the object. When the velocity reaches a certain high, the resistance and gravity are balanced. The so-called maximum speed was thus reached.
Ignoring the air resistance, then since the acceleration is the same is gTherefore, when the fall height is the same, the fall time is the same. For 5kg and 10kg balls, the speed at which the ball is dropped at the height of the Leaning Tower of Pisa does not cause enough resistance to affect the ball.
And they are all iron balls.
So both balls still hit the ground at the same time.
-
In Newton's first law, the greater the mass, the greater the gravitational force. Obviously, one has a large mass and one has a small mass. Although the gravitational pull is small.
Almost negligible! But there are some differences! If it weren't for the low height of the Leaning Tower!
It's obvious! Find a place that is particularly high! Gravitational attraction to each other!
There are big and small!
-
1. It has nothing to do with the maximum falling speed;
2. From the formula s=1 2gt 2 in free fall, it can be seen that it really has nothing to do with quality;
3. Air resistance is more obvious for iron and cotton, but it really has no effect on two iron balls, unless your eyes can magnify 10,000 times.
Landlord,"Maximum speed"What is it, have you studied physics?
-
Galileo wasn't wrong, you just misunderstood. Once you've learned about gravitational acceleration, you'll understand who's right and who's wrong.
-
Considering air resistance, objects with different masses of the same material shape will fall faster with larger masses.
What Galileo said is that it falls as fast as it does not take into account air resistance.
There is air resistance on the earth, and landing at the same time is an approximate conclusion, and putting the iron ball on the moon and ignoring the air resistance, is closer to the ideal conclusion of landing at the same time.
-
In fact, the two iron balls pushed by Galileo on the Leaning Tower of Pisa at that time did not fall to the ground at the same time, but this does not mean that Galileo was wrong, because in order to truly achieve free fall movement, it needs to be in a vacuum environment, because there is no air resistance to the object and friction. When the American Apollo 11 landed on the moon, the astronauts brought a spoon and a feather, because the surface of the moon is vacuum, and when the spoon and feather landed at the same time, it proved the greatness of Galileo.
-
There are a lot of things in real life that lie to you.
Going to high school. The teacher will do experiments hungry. Long anticipation.
-
Theoretically, Galileo ignored the difference in air resistance air resistance is proportional to the square of the radius, while weight is proportional to the cube of the radius
-
Life experiences tend to give delusions.
Galileo was not wrong.
-
Learn about acceleration and you'll understand.
-
Don't forget that the heavier the weight, the greater the air resistance.
-
The existence of the so-called maximum falling velocity is entirely due to the existence of air resistance, when the air resistance is equal to the gravitational force, the maximum falling velocity of the object is reached, so Galileo is not wrong, the problem is the air.
If it's in a vacuum, it's definitely the same speed, even if it's a feather on one side and an iron ball on the other.
That's why the experiment wasn't conducted with feathers
-
Galileo was not burned, he died of illness.
Galileo's promotion of heliocentrism and Nicolaus Copernicanism was controversial throughout his life, when most people favored the geocentric model, but he met with opposition from astronomers who doubted heliocentrism due to the lack of stellar parallax. The matter was investigated by the Roman Inquisition in 1615 and concluded that heliocentrism was "philosophically stupid and absurd."
It is formally heretical due to the obvious contradiction with papal rule in many places. Galileo later defended his views in a "Dialogue on Two Major World Systems" (1632), which seems to have alienated him from Pope Urban VIII by attacking him and the Jesuits, who had always supported Galileo.
Although Galileo's research was largely restricted, Galileo did not stop his scientific research. While he was under house arrest, he still completed the scientific book "Two New Science".
In 1642, after suffering from fever and heart disease, Galileo died on January 8, 1642, at the age of 77. Ferdinand II, Grand Duke of Tuscany, wanted his body to be buried in the Church of the Holy Cross, next to the graves of his father Patta and other ancestors, and to erect his Marble Mausoleum of Honor.
Galileo's contribution
Galileo Galilei was the first scientist to introduce experiments into mechanics, and he used a combination of experiments and mathematics to determine some important laws of mechanics. Around 1582, after a long period of experimental observation and mathematical calculations, he obtained the law of isochronosis, and then dropped out of school in 1585 due to his family's financial difficulties.
While away from the University of Pisa, he delved into the writings of ancient Greek scholars such as Euclid, Archimedes, and others. Based on the principle of levers and buoyancy, he wrote the first article entitled "The Balance". Soon after, he wrote ** "On Gravity", which revealed the essence of gravity and the center of gravity for the first time and gave accurate mathematical expressions, so it became famous.
-
1.Copernicus.
Suspicion of Eudox, Aristotle.
Ptolemy's geocentrism said.
So the heliocentric theory was proposed.
Publication of "Celestial Movements".
2.Galileo.
Doubting Aristotle's theory of mechanics, the Leaning Tower of Pisa was carried out.
's experiments proved that "the speed at which an object falls is independent of the weight of the object".
The public "show" location is at the Leaning Tower of Pisa. Early one morning in 1590, the professors of the University of Pisa, dressed in purple velvet robes, walked up to the tower, triumphantly ready to see Galileo make a fool of himself; Students and townspeople also gathered at the base of the Leaning Tower of Pisa to see what was going on. Galileo and his assistant were unhurried and at ease, and climbed the Leaning Tower of Pisa amid the boos of the crowd.
Galileo held a 10-pound shot put in one hand and a 1-pound shot put in the other. He said loudly: "The people below can see clearly, the shot put is coming down!"
After saying that, both hands were released at the same time, and the two lead balls were thrown from the tower at the same time. The crowd of onlookers laughed mockingly, but miraculously appeared, two lead balls that fell naturally from the tower at the same time, passed through the air at the same time, and fell to the ground at the same time. The crowd whispered in surprise:
Is this true? "The die-hard followers of Aristotle, still unwilling to believe their admirers, Aristotle, could have foolishly thought that Galileo had cast a magic trick in the lead ball. To convince everyone, Galileo repeated the experiment again, and the results were the same.
Galileo defeated Aristotle's followers by eloquently proving that "the speed at which an object falls has nothing to do with its weight".
It was this famous experiment at the Leaning Tower of Pisa that shook the prejudice of Aristotle's long-standing dominance in physics for the first time and shattered the myth of Aristotle. Later, Galileo calculated and came up with the law of free fall.
3.There have always been too many stories about the progress of learning that only skepticism.
-
Galileo Galilei was a great Italian astronomer, physicist and philosopher whose scientific contributions had a profound impact on the development of modern science and technology. However, Galileo came into conflict with the Church on the issue of openly supporting Copernicus's heliocentric doctrine and opposing Catholic doctrine, and was eventually convicted by the Church.
In the 16th and early 17th centuries, the Earth was considered the center of the universe, and celestial bodies such as the sun, stars, and planets revolved around the Earth. This astronomical view is known as geocentrism. However, Copernicus proposed the heliocentric theory, which states that the sun is the center of the universe and that the earth and other celestial bodies revolve around the sun.
Galileo supported Copernicus's view and observed some evidence in favor of Copernicus through his telescope, such as Jupiter's four moons orbiting Jupiter. These findings contradict the teachings of the Church, which believes that the earth is the center of the universe, a unique place created by God.
Galileo's remarks and discoveries caused discontent in the church, and he was ordered to stop discussing heliocentrism and summoned to Rome for trial. At the trial, Galileo was forced to retract his remarks and was found guilty. The Church considers his statements to be heresy and undermine doctrine and faith.
Galileo was eventually forced to admit in public that his remarks were wrong, convicted of a crime, banned from disseminating anything contrary to his teachings, and imprisoned for a period of time.
Galileo's verdict became a famous conflict between science and church in history, marking the confrontation between science and religion. However, over time, people have come to realize the complementarity and interdependence between science and religion, and both have an important place and role in modern society. Galileo's contributions and achievements are also widely recognized and appreciated, and he is regarded as one of the founders of modern science, and his ideas and methods have had a profound impact on later scientific research, and also provide important enlightenment for mankind to understand the universe and itself.
-
In the 17th century, Galileo was tried and convicted by the Holy See for preaching the Copernican doctrine and its support for the idea that the earth revolves around the sun.
In fact, Galileo's scientific research and discoveries were opposed by the Holy See, and his views provoked the religious beliefs of the time, so they were strongly opposed and condemned. Eventually, Galileo was convicted and convicted of heresy and imprisoned after being forced to retract his dogma and invented open letters on the theory of the Earth's motion around the sun.
However, as time went on and science developed, Galileo's theory gained more and more support, and in 1992 the Holy See officially recognized the correctness of Galileo's theory of the earth around the sun and apologized to him.
-
The version downstairs makes me a little different.
Excerpt from Hackers and Painters.
Today, it is normal to say that the earth revolves around the sun, but in 17th-century Europe, it would be a great disaster. Galileo said this, and as a result, he was tried by the Inquisition.
From the very beginning of the trial, the Inquisition had no intention of prosecuting Galileo, because Galileo made it clear that he would do whatever the Inquisition requested. This was a reluctant move, because as long as he did not plead guilty, the Inquisition would not let him go. Shortly before that, the philosopher Bruno had refused to plead guilty, and the Religious Law Tribunal ordered Bruno to be burned.
The irony of Galileo's trial by the Holy See for propagating heliocentrism is that he was only promoting Copernicus's views, and the latter was unharmed. In fact, Copernicus not only did not oppose the Holy See, but was a devout Catholic clergyman, who dedicated his writings to the Pope. Unfortunately, Galileo was just in time for the opposition within the Holy See to come to power, the Reformation was suppressed, and any unorthodox thought was subjected to unprecedented harsh control and prohibition.
Note that this is C, not C++
scanf("%d",&a[i]);i is not initialized. The default value is 0??It's been a long time since I've done C. >>>More
Set up a broadband connection again.
132 This error is a very character-checking error, it may be that your memory is incompatible, or there may be a virus or Trojan horse. >>>More
I think you just have to explain it to him.
Be honest with him about your thoughts and feelings. >>>More