initial commit / add all books

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diff --git a/3764/CH4/EX4.2/Ex4_2.sce b/3764/CH4/EX4.2/Ex4_2.sce
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+clc
+//
+
+//Variable declaration
+n=-1
+
+//Calculation
+//Centroid
+sumA=3000                                                                       // Summing up the area(mm**2) 
+M=3                                                                             // Couple(kN.m) 
+cA=0.022                                                                        // Distance(m)                 
+Y=(114*(10**6))/(3000.0)                                                        // Distance(mm)
+//Centroidal Moment of Inertia
+Ix=((1/12.0)*(90)*((20**3)) + (90*20*(12**2)) + ((1/12.0)*(30)*((40**3))) + (30*40*(18**2)))/((10**12)*(1.0)) // Centroidal moment of inertia(m**4)  
+//Case(a) Maximum Tensile Stress
+sA=((M*cA)/(Ix)*(1.0))/(1000.0)                                                          // Maximum tensile stress(MPa) 
+//Maximum Compressive Stress
+sB=n*(3*0.038)/((868*(10**-9)*(10**3)))                                      // Maximum compressive stress(MPa) 
+//Case(b) Radius of Curvature
+p=((165*868*((10**-9)))/(3))*((10**6))                                       // Radius of curvature(m)
+
+
+// Result
+printf("\n Maximum tensile stress = %0.3f MPa' ,sA)
+printf("\n Maximum compressive stress = %0.3f MPa' ,sB)
+printf("\n Radius of curvature = %0.3f ft' ,p)