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+// A Textbook of Fluid Mecahnics and Hydraulic Machines - By R K Bansal
+// Chapter 2 - Pressure and its measurements
+// Problem 3.34
+
+//Given Data Set in the Problem
+dens=1000
+g=9.81
+a=2.4
+l=6
+w=2.5
+d=2
+h=1
+x=3
+
+//calculation
+//1)
+tan_theta=a/g
+theta=(atan(a/g))/%pi*180
+mprintf("\nThe angle of water surface to the horizontla is %f degrees downwards\n\n",theta)
+//2)
+h1=h-x*tan_theta
+h2=h+x*tan_theta
+p_max=dens*g*h2
+p_min=dens*g*h1
+mprintf("The maximum and minimum pressues at the bottom are %f and %f N/m^2 respective;y\n\n",p_max,p_min)
+//3)
+A1=h1*w             //BD=h1
+H1=h1/2
+F1=dens*g*A1*H1
+A2=h2*w
+H2=h2/2
+F2=dens*g*A2*H2
+F=F2-F1         //resultant force
+mprintf("The resultant force due to water acting on each end of the tank is %f N\n",F)