- #1
How Did I Solve a Hard Problem on My Journey?
- Thread starter tukms
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Homework Help Overview
The discussion revolves around a problem involving the dynamics of a rod and a disk, specifically focusing on the center of rotation and the application of conservation laws in an isolated system.
Discussion Character
- Exploratory, Assumption checking, Conceptual clarification
Approaches and Questions Raised
- Participants express challenges in identifying the center of rotation and apply conservation laws, while some suggest visual aids to clarify the problem setup. Others discuss the relationship between translational and rotational motion.
Discussion Status
The conversation is ongoing, with participants sharing their thoughts and attempts to understand the problem better. Some have offered insights into the nature of forces acting on the rod, while others are still seeking clarity on the concepts involved.
Contextual Notes
There is a noted lack of detailed work shown by the original poster, which has prompted feedback regarding the need for more context and effort in presenting the problem.
- #2
granpa
- 2,268
- 7
lets see here.
you don't provide a meaningful title to
tell people what your question is about so
they have to click on it to find out.
Then you don't show any work that
you've done to try to figure it out for yourself.
Then you don't even bother to type anything except
a 6 word sentence telling people to click on the image which
also doesn't show any work because its just a picture of your textbook.I don't think you should expect too many replies.
you don't provide a meaningful title to
tell people what your question is about so
they have to click on it to find out.
Then you don't show any work that
you've done to try to figure it out for yourself.
Then you don't even bother to type anything except
a 6 word sentence telling people to click on the image which
also doesn't show any work because its just a picture of your textbook.I don't think you should expect too many replies.
Last edited:
- #3
tukms
- 11
- 0
No , I have tried to solve it but the hard occurs when I don’t know the center of rotation of the rod . In fact , I know that this system is isolated and we have 3 laws of conservations for : linear momentum , mechanic energy , angular momentum . But I still don’t resolve it
PS I have both ebook and hardcover book , so I only post image to reduce the time for typing .
PS I have both ebook and hardcover book , so I only post image to reduce the time for typing .
- #4
tukms
- 11
- 0
No , I have tried to solve it but the hard occurs when I don’t know the center of rotation of the rod . In fact , I know that this system is isolated and we have 3 laws of conservations for : linear momentum , mechanic energy , angular momentum . But I still don’t resolve it
PS I have both ebook and hardcover book , so I only post image to reduce the time for typing .
PS I have both ebook and hardcover book , so I only post image to reduce the time for typing .
- #5
granpa
- 2,268
- 7
a picture of the stick and disk striking each other would be helpful.
You need to show what you've done so far or how you think it should be done.
You need to show what you've done so far or how you think it should be done.
- #6
tukms
- 11
- 0
I myself reckon that the stick would be moved in the composition of two simpler motions as transtational motion and rotational motion , but I don’t know the axis of the rotation
I think that if you could solve this problem , the solution would be done in the natural way and I could understand it
Thank
I think that if you could solve this problem , the solution would be done in the natural way and I could understand it
Thank
Attachments
- #7
granpa
- 2,268
- 7
I haven't been able to come up with a simple intuitive answer.
all I have been able to figure out is that a single force acting on one end of the stick is equivalent to a half force acting at each end of the stick to move it and a half force acting at each end of the stick to rotate it.
all I have been able to figure out is that a single force acting on one end of the stick is equivalent to a half force acting at each end of the stick to move it and a half force acting at each end of the stick to rotate it.
- #8
tukms
- 11
- 0
thank , but how to prove your conclusion :P
PS your thought made me excited . I also try to find the solution with you
PS your thought made me excited . I also try to find the solution with you