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// A Textbook of Fluid Mecahnics and Hydraulic Machines - By R K Bansal
// Chapter 3-Hydrostatic Forces on surfaces
// Problem 3.21
//Data given in the Problem
b=2
h=3
A=b*h/2
theta =60
dens=1000
g=9.81
//calculations
x=1/3*h //x=AG distance
H=2.5 + (x * sin (theta*%pi/180))
//1)
F=dens*g*A*H
mprintf("The total pressure is %f N\n",F)
//2)
IG=b*h^3/36
COP=IG*(sin (theta*%pi/180))^2/(A*H)+H
mprintf("Te COP is at %f m \n",COP)
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