lucasgab.py

Created on February 01, 2022
1.17 KB
EX 1:  Patm = 1,013.10**5 Pa
  A
h3
  B
h2
  C
h1

Q1: PA-PB= pliq*g*(Za-Zb)
Phaute - Pression basse = masse volumique * gravite * hauteur
ZA----Pa
  pliq
ZB----Pb

Q2: PB-PA = pliq3 * g * ZA-ZB
          = 680 * 9,81 * 2 
       PB = (680 * 9,81 * 2) + PA                
          = 216905,6 Pa
    
    PC-PB = pliq2 * g * ZB-ZC 
          = 1000 * 9,81 * 2
       PC = (1000 * 9,81 * 2) + PB
          = 236525,6 Pa
    
    PD-PC = pliq1 * g * ZC-ZD       
          = 1200 * 9,81 * 3
       PD = (1200 * 9,81 * 3) +PC
          = 271841,6 Pa

Q3: Pabs = Prel + Patm 
    Prel = Pabs - Patm 
         = 271841,6 - 1,013.10**5
         = 170541,6 Pa 

Q4: Px = Patm 
  Pc-Px= pliq2 * g * Zx-Zc
Zx = (Pc-Px  / pliq2 * g) + Zc
   = (236525,6-1,013.10**5  /  1000*9,81) + 1 
   = 14,78446 = 14,8m 

Ex 3: 
  
Q1: Pa-Patm = pmercure * g * H
   -Patm = (pmercure * g * H) - Pa
    
Q2: 
   -Patm = (pmercure * g * H) - Pa
         = 13655 * 0,77 * 9,81 - 500 
         
    Patm = 102645,8 Pa
    
Ex 4: 
  
Q1: Pgaz - P atm = pliq* g * d 
Pgaz = (13655*9,81*0,47) + Patm
     = 164259,1 Pa

Q2: P(N/m2)= F(N)/S(m2) 
20cm**2 = 0,0020 m**2
F = P*S = 164259,1*0,0020
        = 328,52 N