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+////Example 1.6 Page No:24
+///Find Stress in square metal bar
+//Input data
+clc;
+clear;
+A1=50*50*10^-6;                 //Area ofsquare metal bar in mm**2
+Pc=600*10^3;                   //Axial compress laod in KN
+L1=200*10^-3;                   //Gauge length of metal bar in mm
+deltaLc=0.4*10^-3;             //Contraction length of metal bar in mm
+deltaLlateral=0.05*10^-3;      //Lateral length of metal bar in mm
+
+//Calculation
+sigmac=Pc/A1;              //Stress in square metal bar 
+ec=deltaLc/L1;             //Longitudinal or linear strain in square metal bar
+E1 =sigmac/ec;             //Smodule of elasticity
+elateral=deltaLlateral/L1; //Lateral strain in square metal bar
+poissonsratio=elateral/ec;
+
+
+//Output
+printf('stress in bar=%f N/m^2 \n',sigmac);
+printf('longitudinal or linear strain in square metal bar= %f \n',ec);
+printf('module of elasticity= %f N/m^2 \n',E1);
+printf('lateral strain in square metal bar=%f \n',elateral);
+printf('poissons ratio=%f \n',poissonsratio);