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//Operation pressure of hydraulic system(in kPa):
p1=20000;
//Operation temperature of hydraulic system(in C):
T=55;
//Piston diameter(in mm):
D=25;
//Viscosity of SAE 10W at 55C(in kg/(m-s):
u=0.018;
//Mean radial clearance of a cylinder(in mm):
a=0.005;
//Gauge pressure on lower pressure side of piston(in kPa):
p2=1000;
//Lenth of piston(in mm):
L=15;
//Denity of water(in kg/m^3):
dw=1000;
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