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| Newton's third law problem. |
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| james_s:
:palm: :horse: |
| electrodacus:
--- Quote from: Nominal Animal on November 24, 2022, 09:33:29 pm ---I'm an easily socially manipulated sucker, I know. :-[ But the demand to "prove them wrong" just goes over the top. As if the physical Lego model that behaves as I described and contrary to their description was not proof enough. Time to use the Ignore list, I guess. --- End quote --- You do not have the explanation of how the Lego model works. I do and the equations exactly predict what the Lego model shows in real world. a) The input power to the Lego is the force and speed you apply to the string. b) The output power can not be higher so vehicle could not move away from the direction the string is pulled without including energy storage. So while you pull the string if you do that slow enough you will notice that you apply both a force and there is a speed for the string but the vehicle is not moving meaning the input energy was stored unless you can see that radiated as heat to the outside world (part of it will be radiated but a small percentage). Then when enough energy was stored to allow the vehicle to move against the direction the sting moves it will do so but then it will need to again stop accelerating to charge and then accelerate again. This pause to charge then accelerate cycles are fast enough that your brain will not be able to detect same as you can not detect that a video is made out of individual still frames so for a few ms the image is unchanged but your brain (and mine and anyone else's) will think that motion is continues. |
| PlainName:
--- Quote from: electrodacus on November 24, 2022, 08:45:26 pm --- --- Quote from: PlainName on November 24, 2022, 07:50:19 pm --- And, to round it off, if you're pushing along at 5m/s or 10m/s or <any>m/s you are NOT accelerating. If it were accelerating I would say "it's accelerating". --- End quote --- You can not get there (above wind speed directly downwind) unless you push the vehicle or stored energy pushes vehicle. So from that point you mentioned 50% above wind speed without any stored energy your vehicle can only decelerate due to frictional losses and there is no way to accelerate as wind power available there is zero and there is no such thing as ground power. --- End quote --- "Forget where the power comes from for the moment and look at how it's actually working" See, I told you it was utterly pointless and useless to try explaining to you. You simply cannot get your mind out of the groove it's worn, and you will drop in any distraction going in order to wear that groove deeper. |
| electrodacus:
--- Quote from: PlainName on November 24, 2022, 09:47:39 pm ---"Forget where the power comes from for the moment and look at how it's actually working" See, I told you it was utterly pointless and useless to try explaining to you. You simply cannot get your mind out of the groove it's worn, and you will drop in any distraction going in order to wear that groove deeper. --- End quote --- So are you saying that is irrelevant to know the input power available for this wind only powered vehicle ? Without knowing the answer to that question you will not be able to predict anything about the motion of that vehicle. So either post the equation describing the wind power available to vehicle or you are just wasting my time and others that read this. |
| PlainName:
--- Quote ---So are you saying that is irrelevant to know the input power available for this wind only powered vehicle ? --- End quote --- At this point, yes. Later we will figure out what power we need and where it comes from, but right now we don't even know what use it would be! Well, obviously, we do but you don't. Edit: rhetorical. I have no intention of spending another 2 months battling your mental illness or whatever it is that causes you to stick in your rut. |
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