General > General Technical Chat
Newton's third law problem.
electrodacus:
--- Quote from: IanB on November 20, 2022, 11:21:59 pm ---And yet the green bar moves to the right with no stick slip or energy storage needed. How do you explain that?
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The green bar will not move to the right without both stick slip and and energy storage.
I also saw your animation, and you need to keep one of two surfaces fixed (ground reference). Then see if your math still works.
IanB:
--- Quote from: electrodacus on November 20, 2022, 11:29:18 pm ---I also saw your animation, and you need to keep one of two surfaces fixed (ground reference).
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Why? You think it is less likely for the cart to move with one belt stationary than with both belts moving?
If you want the left belt to be stationary, just make that the frame of reference and follow it along with your eye. It is exactly the same equations.
electrodacus:
--- Quote from: PlainName on November 20, 2022, 11:17:12 pm ---That, there, illustrates why you will never get this. You start out 'knowing' it won't work, so therefore nothing anyone can do or suggest will show it working because, well, you know it can't.
Just for once, try NA's suggestion without a preconceived idea and see what happens. Once you have uncontaminated experimental data you can argue about how it came about and what it means, and refine the experiment for more data if necessary.
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I made the experiment's and all show exactly what I'm saying.
Not sure you saw the video where I remove the slip at the front wheel and vehicle as expected was dragged in the direction of the treadmill as it is as I say a locked mechanism.
It should be easy to see that the mechanism is locked if you look at the lever version of the same mechanism.
IanB:
--- Quote from: electrodacus on November 20, 2022, 11:34:51 pm ---It should be easy to see that the mechanism is locked if you look at the lever version of the same mechanism.
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Is the orange line a rope? And are the yellow circles hinges? And if so, how can it be locked with so many movable elements present?
electrodacus:
--- Quote from: IanB on November 20, 2022, 11:34:11 pm ---
Why? You think it is less likely for the cart to move with one belt stationary than with both belts moving?
If you want the left belt to be stationary, just make that the frame of reference and follow it along with your eye. It is exactly the same equations.
--- End quote ---
I guess you can not do what you are asking me to do.
Fortunately I can imagine what happens if you have the left belt stationary. I guess you need to do the math to know that.
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