Guest dunnyyyyyy Posted September 5, 2006 Report Share Posted September 5, 2006 A vessel has the height of 20 meters. Calculate the pressure at the bottom of the tank if it is only 50% full. take the density of water is 1000 kg per meters cubed and gravity as 10m/s squared. neglect atmospheric pressure as this will be negligable in comparison. work it out if you can??? Quote Link to post Share on other sites
Guest tazdastokmaker Posted September 5, 2006 Report Share Posted September 5, 2006 am just about to go to my phics class the now i am sh*t at maths lol i no how to do it tho :11: Quote Link to post Share on other sites
Guest dunnyyyyyy Posted September 5, 2006 Report Share Posted September 5, 2006 i havnt got a clue, its from my last years course in engineering, i need that one question to finish and i can start my course this year, i cant start if i dont hand it in today :| :whistle: Quote Link to post Share on other sites
Guest tazdastokmaker Posted September 5, 2006 Report Share Posted September 5, 2006 is it 100000 psm? Quote Link to post Share on other sites
Guest dunnyyyyyy Posted September 5, 2006 Report Share Posted September 5, 2006 thats what i thaught at first.. 10meters x 1000 for the density of water x 10 for the gravity but i dont think that its right is it? Quote Link to post Share on other sites
Guest tazdastokmaker Posted September 5, 2006 Report Share Posted September 5, 2006 all the tell you to night am goin to the class lol Quote Link to post Share on other sites
Guest dunnyyyyyy Posted September 5, 2006 Report Share Posted September 5, 2006 lol, im goin into college today, it has to be handed in today i think i will just see the lecturer about it when i go to hand it in, thanks anyway mate Quote Link to post Share on other sites
chillitt 0 Posted September 5, 2006 Report Share Posted September 5, 2006 its 10,000 kg per sq. m. unless the vessel in moving... Quote Link to post Share on other sites
Guest dunnyyyyyy Posted September 5, 2006 Report Share Posted September 5, 2006 its 10,000 kg per sq. m. unless the vessel in moving... how is that worked out then? is it 10m x 1000kg/m3 divided by 10 m/s2 gravity? Quote Link to post Share on other sites
chillitt 0 Posted September 5, 2006 Report Share Posted September 5, 2006 (edited) its just a column of water. 10m/s is (give or take) normal acceleration due to gravity, and shouldn't make any odds. unless the vessel is moving with or against gravity. i think.. Edited September 5, 2006 by chillitt Quote Link to post Share on other sites
Guest dunnyyyyyy Posted September 5, 2006 Report Share Posted September 5, 2006 it worked out that pressure = density of water (1000kg/m3) x height of water (10m) x accelleration due to gravity (10m/s 2) so that means 1000 x 10 x 10 = 100000 so the pressure = 100000 pascals or 100 kpa Quote Link to post Share on other sites
chillitt 0 Posted September 5, 2006 Report Share Posted September 5, 2006 i knew i should have kept quiet.... Quote Link to post Share on other sites
Guest tazdastokmaker Posted September 5, 2006 Report Share Posted September 5, 2006 it worked out that pressure = density of water (1000kg/m3) x height of water (10m) x accelleration due to gravity (10m/s 2) so that means 1000 x 10 x 10 = 100000 so the pressure = 100000 pascals or 100 kpa that sounds about right i think it shod be :11: Quote Link to post Share on other sites
Guest furryferter Posted September 5, 2006 Report Share Posted September 5, 2006 I dont think the vessel moving would affect the hydrastatic pressure where does the accellaration come from? here how to work it out in old money to convert meteres to feet you multiply by 3.281 to work out the hydrastic pressure of a column of fluid the easiest way is 0.052 x wt/ga lx depth(ft) (tvd) freshh water wieghs 8.33lbs/gal 10 x 3.281 =32.81 0.052x8.33x32.81=14.2 p.s.i to convert psi to kilopascals muliply by 6.895 14.2x6.895=9.653kPa Quote Link to post Share on other sites
Guest tazdastokmaker Posted September 5, 2006 Report Share Posted September 5, 2006 :search: it went that way >>> :11: Quote Link to post Share on other sites
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