In fact, this problem of two balls in a tube is the first one in a series of problems. It is a problem that has been repeatedly simplified from other problems. This problem of two balls in a tube has two simple variations. For the first variation, with all other conditions remaining the same...
I also know it's quite difficult. So is it possible to calculate the first three terms or the first term of this sequence? Besides, I'd like to ask you, how can I find the post I made two years ago? Which icons or texts should I click on? I also want to ask, can a post be modified after it is...
Thank you for typing so many words and drawing the diagrams. After studying for a long time, I finally understood it. You gave a special example and explained the oscillation periods of the center of mass of the two balls in the horizontal and vertical directions. Thank you.
In Question 4, the state of motion refers to the velocity of the small balls before the collision, specifically at the instant just before the collision. If the component of the velocity along the y-axis is positive, it is marked as 1, and if it is negative, it is marked as 0. Then, the...
I would like to add three more questions to help everyone understand the original intention of my question. The direction of the length of the tube is set as the x-axis, and the direction of the width is set as the y-axis. The two small balls A and B in the tube are exactly the same, and the...
Thank you very much for your help. This is indeed a two-dimensional problem. A friend of mine previously compared my problem to ice hockey pucks moving on an air hockey table, and that metaphor is really quite appropriate.
In fact, it's still a bit difficult to discuss physical problems with others in a language without having a good command of that language. Besides, I'm not familiar with some of the rules on this website. I have seriously thought about this problem, but I haven't come up with any simple and...
I'd like to ask whether the following problem is easy to solve. Given that the initial states of two small balls in a tube are unknown constants, find the specific position of the center of mass of the small balls in the tube when the two small balls collide, as well as the velocities of the...
Firstly, this is not a homework problem. Secondly, I've been out of school for more than 20 years, and I've pretty much forgotten all the English and physics I learned back then. Finally, for me, just accessing this website is already a challenge. I would really appreciate it if you could...
I'd like to ask whether the following problem is easy to solve. Given that the initial states of two small balls in a tube are unknown constants, find the specific position of the center of mass of the small balls in the tube when the two small balls collide, as well as the velocities of the...
Your understanding of the problem is completely correct. When there is only one ball, I understand your answer. But when we need to consider the collision of two balls, is the above answer still valid?