There is no shortage of examples of potential energy utilization in life, such as the bow. When a person pulls an arrow by hand, the back end of the arrow is against the string, so the string will also be deformed. And the string is connected to the bow, so the bow is also deformed. During the deformation, the elastic potential energy of the string is converted into kinetic energy. The elastic potential energy of the bow is replenished to the string, so that all their elastic potential energy goes to the arrow. And why is the arrow straight? This is because if the arrow is not straight when it goes out, then it will cause the gravitational potential energy to be different. At this time, the gravitational potential energy does negative work. In this way, it will be very difficult for us to shoot arrows. The slingshot is different, and the bungee cord is certainly elastic. However, it has a small elastic potential energy. In addition, the part that wraps the object basically does not provide elastic potential energy, so the energy that the wrapped object can obtain is limited. There is also an elastic ring. It is said that you hold one end of the elastic ring and throw it downwards, and the lower end of it will be delicate for a while. And this is the following passage that is subjected to elastic potential energy, thus overcoming the gravitational potential energy.

Regarding gravitational potential energy, it is natural to mention Aristotle and Galileo. Aristotle said that objects with a large mass and a small object fall from the same height, and the object with a large mass has a faster velocity. For thousands of years, people have thought so. Here, there is another explanation. The gravitational potential energy is equal to the mass multiplied by the acceleration due to gravity multiplied by the height. Now, in the same place and at the same height. So, isn't the ratio of the gravitational potential energy of two objects equal to the ratio of mass? It is very cloudy, and the gravitational potential energy of an object with a large mass is greater. In the process of falling, the gravitational potential energy is converted into kinetic energy. Whereas, kinetic energy is equal to 1/2 multiplied by mass multiplied by velocity squared. We know that the ratio of mass is equal to the ratio of gravitational potential energy, whereas kinetic energy is equal to potential energy. Then, the ratio of kinetic energy should be equal to the ratio of mass. In this way, the speed can only be equal. However, after hitting the ground, the object does not stand still, but is bounced up to a certain height. Although the height is not high, it is not to be ignored. In this case, the calculated velocity is the average velocity rather than the falling velocity of the object. However, Galileo's experiment showed that the falling speed of the negative object was the same. As a rule of thumb, we can conclude that objects with a large mass are bounced at a lower height. The displacement is equal to the velocity multiplied by the time, so the question arises do two objects fall at the same time? So, you can't think about it. A very simple truth. A massive object needs to expend more energy to maintain the same velocity. Even though its gravitational potential energy is greater, it consumes more to maintain its velocity. However, it is still not possible to assert that the falling velocity of an object with a large mass is less than the falling velocity of an object with a small mass.

The table has length and width, and people have life and death. The laws of nature, how can man resist them? The spark of thinking is in the discussion. I should do it. Talk about it, you should be you. Ideas big or small, you can do it. The narrative should be detailed. No more talking, you show your power. Water says.

The breeze is not strong, and the drizzle is coming. My heart is rippling, and I don't know where to go? Flip through the book and see the potential energy. When your heart moves, how can you not speak?

We know that both mass and height can affect gravitational potential energy, so can density? There is a saying that you can lift a stone and shoot yourself in the foot, but no one says that you pick up cotton and shoot yourself in the foot. Some people say it's because of the quality. I don't think so. You drop a small piece of wood from a great height and see if you can smash your foot? That's for sure. Even if the wood is small, it can still make you feel pain. However, this is obviously not the case with a pound of cotton. A pound of cotton is always greater than the mass of a small wooden block, but the damage caused by a small wooden block to people is greater than that of cotton. If you say that mass can affect gravitational potential energy, that's good. But 10,000 pounds of cotton fall from your head, will you get hurt? It's very cloudy, it won't. This is because of the density. Take, for example, a pound of pig iron and a pound of cotton. It is conceivable that the volume of pig iron is smaller, while the density of cotton is naturally smaller. Of course, density is mainly through the influence of quality. Or rather, I'm not right. Density does not directly affect gravitational potential energy, but density can affect the conversion rate of gravitational potential energy into kinetic energy. The higher the density, the higher the conversion rate. It is precisely because of the low conversion rate of cotton that it cannot be smashed and injured.

The tree has a top, and the root has no end. Life is finite, knowledge is unlimited. Though I think a lot, how can I be exhausted? If I have not spoken, you should speak. I have not finished speaking, and the list should be complete. At this moment, it is time to speak. Six said.

Assuming that the centroid of two objects is close to each other, is the gravitational force between them infinite? To answer this question, one has to think about whether gravity is really unlimited? Just imagine, there is gravitational mass and inertial mass in mass. The inertial mass is the majority, while the gravitational mass is very small. But, let's think about it, how many objects are there in the universe? The law of gravitation states that there is a gravitational force between every two objects. No matter how far away an object is from us, it has a gravitational pull on us. How many objects are there in the universe, and how much gravitational pull do they exert on us? Yes, gravity does exist. However, I think there is some kind of substance that limits gravity. Let's think about it. If an object is created, then it must have to increase its mass to act as gravitational mass. Also contribute its own mass between it and other objects. In my opinion, gravitational mass is an evolution of inertial mass. The inertial mass of an object is finite, so the gravitational force cannot be generated indefinitely. If gravity is infinity, then how much inertial mass is needed? Obviously, no object can have an infinite inertial mass. Thus, not infinity. Margarita said.

I suddenly came to poetry, so I wrote a poem.

There is a little urchin who loves to play with the lid of the cup. The mouth of the bottle moved and moved, looking for the limit. Why don't the lid fall, it turns out to look at the particle. If it is in the mouth of the bottle, it will naturally not fall. Enough of the lid, take the microscope again. Looking left and right again, the molecules move irregularly. Playing with other things, don't think about it again. Du said.

The bottle has a volume and the cup has a border. I don't want to stop, I don't want to. This is the end of the statement. So it ended, and they dispersed. Mizukawa said.