walker Posted June 1, 2008 Report Share Posted June 1, 2008 Need help with some fluids! p=rho*g*h Quote Link to comment Share on other sites More sharing options...
munkee Posted June 1, 2008 Report Share Posted June 1, 2008 (edited) scrap that uve been given areas.. Edited June 1, 2008 by Spacemunkee Quote Link to comment Share on other sites More sharing options...
walker Posted June 1, 2008 Author Report Share Posted June 1, 2008 this isnt a difficult question, hence its only worth 5 marks. This is a bit more trickey: All help is really appreciated! Andrew Quote Link to comment Share on other sites More sharing options...
Tomm Posted June 1, 2008 Report Share Posted June 1, 2008 The first one, I make the answer as 1.0096 (1atm + 980 Pa) but it looks very wrong. Quote Link to comment Share on other sites More sharing options...
walker Posted June 1, 2008 Author Report Share Posted June 1, 2008 yeah, i was thinking along those lines, but thats not the right answer, also, its asking for the pressure relative to the atomphere, not absolute pressure. Quote Link to comment Share on other sites More sharing options...
Tomm Posted June 1, 2008 Report Share Posted June 1, 2008 I was going by the idea that the volume of water in the overspill would weigh 200kg, exerting a force which would equilibrate with the other side causing an increase in pressure on that side. But then the water level on the left would go up, and it would go down on the right, allowing you to add more water up to the level. If you think about it, this process could go on ad infinitum, which is confusing EDIT: Kinda like Zeno's Paradox Quote Link to comment Share on other sites More sharing options...
walker Posted June 1, 2008 Author Report Share Posted June 1, 2008 (edited) got it now, feel like a right div! p=rho*g*h where h is 0.6, not 0.5, due to the fact that the level of water in the tank must go down 0.1m for the water to rise 0.5m in the overfill. So: p=1000*9.81*0.6 =5886Pa or =5.890kPa think i can do the second one now using the equation: lp=(Ic/Ac+lc) + lc Andrew Edited June 1, 2008 by walker Quote Link to comment Share on other sites More sharing options...
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