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+// A Textbook of Fluid Mecahnics and Hydraulic Machines - By R K Bansal
+// Chapter 2 - Pressure and its measurements
+// Problem 2.7
+
+//Given Data Set in the Problem
+d=3
+a=%pi/4*d^2
+D=10
+A=%pi/4*D^2
+f=80
+dens=1000
+g=9.81
+
+//Calculations
+//When pistons are at same level
+F=f/a*A
+mprintf("The force on the large piston in level with the small piston  is %f N\n",F)
+
+//When smaller piston is 40 cm above tha large piston
+p=(dens*g*40/100)/10^4                          //pressure due to 40 cm of the liquid
+F_=(f/a+p)*A
+mprintf("The force on the large piston 40 cm below small piston is %f N\n",F_)