deschoe Posted February 22, 2017 Author Report Share Posted February 22, 2017 @guywould you undersign your claim with your real name ? Quote Link to comment Share on other sites More sharing options...
Maine farmer Posted February 22, 2017 Report Share Posted February 22, 2017 How many others would in this day and age? I have nothing to gain weather anyone believes my opinion or not. I am not trying to prove anything, and anyone else is free to watch the same videos that I watched and agree or disagree. It is nothing to me either way. exchemist 1 Quote Link to comment Share on other sites More sharing options...
deschoe Posted February 22, 2017 Author Report Share Posted February 22, 2017 (edited) @guy you wont undersign with your real name, thats ok, I get it at once. Edited February 23, 2017 by deschoe Quote Link to comment Share on other sites More sharing options...
OceanBreeze Posted February 23, 2017 Report Share Posted February 23, 2017 I thought you won't calculate the machine why don't you do it You are the one making the claim, so you do the math. For one thing, you have not specified how fast you want these cubes to be moving in a given time (acceleration). F=ma so far all you have is the mass. Also, by what means are they moving? Tweezers? LOL Quote Link to comment Share on other sites More sharing options...
deschoe Posted February 23, 2017 Author Report Share Posted February 23, 2017 (edited) what a funny forum, one refuses to watch videos, another declares himself an expert and a third wonders how to move cubes but whatever : Edited February 23, 2017 by deschoe Quote Link to comment Share on other sites More sharing options...
exchemist Posted February 23, 2017 Report Share Posted February 23, 2017 And, funniest of all, it entertains cranks who think they have overturned the 1st Law of Thermodynamics! But that's the internet, I guess...... Quote Link to comment Share on other sites More sharing options...
OceanBreeze Posted February 23, 2017 Report Share Posted February 23, 2017 what a funny forum, one refuses to watch videos, another declares himself an expert and a third wonders how to move cubes but whatever : You forgot to mention the crackpots. They are the funniest!(exchemist beat me to it) :cussing: I take it you are not capable of doing your own math? F=ma, Work = ∫ F dsCan you take it from there? https://www.youtube.com/watch?v=gfCEFDyoBaE Ah! So it is tweezers, and what looks like a bent coat hanger! LOL Quote Link to comment Share on other sites More sharing options...
deschoe Posted February 23, 2017 Author Report Share Posted February 23, 2017 yes internet is a problem. if someone wants to save his faith according to his worldview he must forbid himself watching videos. yes its a cold cold world, the internet. Quote Link to comment Share on other sites More sharing options...
Maine farmer Posted February 23, 2017 Report Share Posted February 23, 2017 yes internet is a problem. if someone wants to save his faith according to his worldview he must forbid himself watching videos. yes its a cold cold world, the internet.You can show a lot in a video, but you can also control what is seen and thus obscure reality. I have watched enough Bugs Bunny to know that you can do things in animation that just won't work in reality. exchemist 1 Quote Link to comment Share on other sites More sharing options...
deschoe Posted February 23, 2017 Author Report Share Posted February 23, 2017 (edited) thats right, but you cant post a video which satisfies everybody. a video can always be a fake, but in these videos you can see what you have to do to proove it by your own, because otherwise you need to trust a stranger in the internet, and I would never trust anybody who trusts the internet. so make the attemps and make a video for the rest inhere and only make the real attemps you can see in ( 4.28 ->, 5.20->, 9.20 ->, 17.35 ) Edited February 23, 2017 by deschoe Quote Link to comment Share on other sites More sharing options...
Maine farmer Posted February 23, 2017 Report Share Posted February 23, 2017 Okay, I watched the video one more time, and I can clearly see someone lifting a block off one side and placing it on the other, and then pulling a block from underneath top transport it to the bottom of the other. You have to lift the block, which requires work, and then you have to pull down the block, which requires still more work, so even if you neglect the sideways transportation, you are still lifting up and pulling down. That is where the energy is coming from. Do you want us to "Pay no attention to the man behind the curtain"? Quote Link to comment Share on other sites More sharing options...
deschoe Posted February 23, 2017 Author Report Share Posted February 23, 2017 take a look at 15.18 exactly, there you find the answer to your question Quote Link to comment Share on other sites More sharing options...
Maine farmer Posted February 23, 2017 Report Share Posted February 23, 2017 15.18 exactly is a cartoon, so maybe Bugs Bunny could get it to work, and even then he would need a magical red arrow to put work in. Quote Link to comment Share on other sites More sharing options...
deschoe Posted February 23, 2017 Author Report Share Posted February 23, 2017 why do you ask me, if you dont belive me anywhere, ask a physicist you trust, why a horizontal movment means no physical work Quote Link to comment Share on other sites More sharing options...
Maine farmer Posted February 23, 2017 Report Share Posted February 23, 2017 Okay, I've had two semesters of physics in college, the same one all first year engineering students and physics majors had to take. First, to take the block off the top of the one side, you have to overcome the force of friction, then at the bottom, you still have the friction going the other way, as well as pushing against the air on top and the water on the bottom. Also, in the part of the video that is not a cartoon, you are lifting the block, putting even more work in.. Much as we may love Bugs Bunny, there is no way for us to live in his world. Quote Link to comment Share on other sites More sharing options...
deschoe Posted February 23, 2017 Author Report Share Posted February 23, 2017 (edited) the mentioned friction appears suddenly in a warming of the system. so the work youve done made the system warmer, but the falling and rising tubes make the system warmer again, so the system at least is warmer then the ammount of work youve done, but where does this additional warming come from even Bugs put it in ? Edited February 23, 2017 by deschoe Quote Link to comment Share on other sites More sharing options...
OceanBreeze Posted February 23, 2017 Report Share Posted February 23, 2017 why do you ask me, if you dont belive me anywhere, ask a physicist you trust, why a horizontal movment means no physical work It is no wonder you believe in the crackpot notion of perpetual motion; you don’t have a clue about the nature of work and energy! No work is done on your cube only during the time it is being carried horizontally at a constant velocity. However, it is necessary to push forward on the cube with a force, for a brief period of time to accelerate it from rest on the raised floater to a constant velocity. Finally, it is necessary to exert a force on the cube again to accelerate it back to rest in order to place it on the second floater. Work is done at the beginning of the horizontal motion and again at the end of the horizontal motion, even disregarding the vertical work of lifting. In brief, you are doing work any time you change the kinetic energy of an object by exerting a net force on it, and the work done is equal to the object's change in kinetic energy. Who do you think you are fooling? Quote Link to comment Share on other sites More sharing options...
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