Recent content by fcukniles

Hi, I need to work out the bending moment of a steel tube, 25mm diameter (3mm thick) 410mm long. im assuming i have to use youngs modulus in some way? what's the correct formula for working out when it will bend? thanks chris

Hi, I need to work out the bending moment of a steel tube, 25mm diameter (3mm thick) 410mm long. im assuming i have to use youngs modulus in some way? what's the correct formula for working out when it will bend? thanks chris

ok right here is what i think I am doing: if A1= 221.7mm^2 A2= 530.9mm^2 need to convert these into N/m^2 so i divide these by 1000. Giving me A1 = 0.2217N/m^2 A2= 0.5309N/m^2. so k = 0.4176. Putting the Change in height 165 mm into this...

ok so if: A1 = 30mm => 300 N/m^2 A2 = 195mm => 1950 N/m^2 k= 0.15385 so puttin these into the formula: 1950 x [sqrt (2x1650x1000)/1-0.15385^2] 3569835.251 ? pretty sure this aint right! any help?

baaaaaaaaaa

ok I am lost... me = wild sheep in new york

how do i convert them? I've been playing around with the numbers but no luck, nothing that is close to 0.450

please see here: https://www.physicsforums.com/showthread.php?t=64453

yeh I am havin a little trouble, im working out the pressure differences in a venturi tube, A1 = 208 A2 = 210 thus k = 0.99 putting that into the formula 1.4304 x sqrt([2x0.2666x1]/[1-0.99^2]) im getting the answer as 1.43 kg/sec but i don't think this is right?

how do i do this? thanks

i know this probably sounds really stupid but how do i convert 20mm of gas into pascals? thnx

i measured the height difference in each of the tubes, these values are in mm how do i work out the pressure change? thanks for help :)

heres what am getting at the minute and it doesn't seam right: A1=201.1 (area of crossection) A2=530.9 K=0.37879 DeltaP= 195 Putting these numbers into the equation i get 17912.11 which is nothing like any of my other values any tell me what this means or where i have gone wrong? thanks

im not quite sure how to find out the theoretical and experimental pressures in a venturi tube is it something to do with the thickness of the tube and the high difference?

yeh how do i work out the coefficient of discharge? thanks