The problem of one tube and two balls on a plane

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SUMMARY

The discussion centers on a physics problem involving a tube of infinite mass and two balls on a plane. Participants emphasize the need for clarity regarding the tube's dimensions and the significance of its placement on a plane. The consensus is that the tube should be finite in length, closed at both ends, and that the balls must have initial velocities for meaningful analysis. The conversation highlights the importance of ideal collisions and the implications of the tube's mass on the motion of the balls.

PREREQUISITES
  • Understanding of classical mechanics, particularly elastic collisions.
  • Familiarity with the concepts of momentum and energy conservation.
  • Basic knowledge of two-dimensional motion and geometric constraints.
  • Ability to interpret physics problems involving idealized scenarios.
NEXT STEPS
  • Research the principles of elastic collisions in classical mechanics.
  • Explore the concept of center of mass in multi-body systems.
  • Study the effects of geometric constraints on motion in physics.
  • Learn about the implications of infinite mass in theoretical physics scenarios.
USEFUL FOR

Physics students, educators, and anyone interested in classical mechanics and problem-solving in theoretical physics contexts.

  • #61
crazy lee said:
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 effective ideas. Even if I take pictures of my notes and upload them, it won't be of any help to you, and the notes are all written in Chinese. So I hope some friends can be understanding. Thank you all.

After a long and productive PM discussion with the folks who have been trying to help you, this thread will remain closed just like your previous one. It seems that you have not been able to better define your question(s) since your original thread:

https://www.physicsforums.com/threa...ution-of-rigid-balls-in-a-vast-space.1050265/

You have an ill-defined problem statement and you keep moving the goalposts as others try hard to help you. That is not a good way to participate in a technical discussion forum. Please do not start yet another thread on this ill-defined problem.
 

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