Expression 23: "p" Subscript, "s" "i" , Baseline left parenthesis, "x" , right parenthesis equals StartFraction, "k" Subscript, "p" "a" , Baseline left parenthesis, "x" , right parenthesis Over 6.8 9 5 , EndFractionpsix=kpax6.895
23
One PSI can lift one cubic foot of water in a 1 square inch tube. Water weighs 62.4 pounds per cubic foot and exerts .4333 psi per square foot.
24
Expression 25: "w" Subscript, "a" "t" "e" "r" "p" "s" "i" , Baseline equals StartFraction, 62.4 Over 144 , EndFractionwaterpsi=62.4144
2KPA pulled ~10 inches of water into a 2.75 inch diameter tube which equals 1 pound of water. Volume is Area*Height, Area is based on Girth. If calculations are correct, 10 * area * weight of water should be ~1 when A = 2.75
27
Expression 28: left parenthesis, 10 times 2.7 5 , right parenthesis times "w" Subscript, "a" "t" "e" "r" "w" "e" "i" "g" "h" "t" , Baseline10·2.75·waterweight
equals=
0.9 9 3 0 5 5 5 5 5 5 5 60.993055555556
28
Expression 29: 88
29
KPA to Newton is 1 kpa = 1000 N per meter^2. A is in inches squared. 1 meter squared is 1550 inches squared
30
Expression 31:
31
The pulling force is based on a circular cross-section.
32
Expression 33: "A" equals pi left parenthesis, StartFraction, "d" Over 2 , EndFraction , right parenthesis squaredA=πd22
equals=
3.1 4 1 5 9 2 6 5 3 5 93.14159265359
33
Expression 34:
34
Expression 35: pi left parenthesis, StartFraction, 1.7 5 Over 2 , EndFraction , right parenthesis left parenthesis, 2 halves , right parenthesisπ1.75222
