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+// Problem no 6.7,Page No.158
+
+clc;clear;
+close;
+
+L=5 //m //Length of beam
+w=40*10**3 //N //U.d.L 
+y_max=0.01 //Deflection
+sigma_s=7*10**6 //Bending stress
+E=10.5*10**9
+
+//Calculation
+
+M=w*L*8**-1 //N*m //Max Bending moment 
+
+//From equation of max deflection
+I=5*w*L**3*(y_max*384*E)**-1 //m**4 
+
+d=sigma_s*2*I*M**-1*10**2 //cm
+b=12*I*((d*10**-2)**3)**-1*10**2 //cm //Breadth
+
+//Result
+printf("Minimum value of breadth is %.2f cm",b)
+printf("\n Minimum value of Depth is %.2f cm",d)