initial commit / add all books

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diff --git a/24/CH7/EX7.2/Example7_2.sce b/24/CH7/EX7.2/Example7_2.sce
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+exec("degree_rad.sci",-1)

+

+//Given that

+mass = 225  //in kg

+displacement = 8.5  //in meter

+F1 = 12  //in N

+Theta1 = dtor(30)  //in rad

+F2 = 10  //in N

+Theta2 = dtor(40)  //in rad

+

+//Sample Problem 7-2a

+printf("**Sample Problem 7-2a**\n")

+//form the definition of Work done

+W1 = F1 * displacement * cos(Theta1)

+W2 = F2 * displacement * cos(Theta2)

+//The net work done

+W = W1 + W2

+printf("The spies transfer %eJ amount of energy during the given displacement\n", W)

+

+//Sample Problem 7-2b

+printf("\n**Sample Problem 7-2b**\n")

+printf("Work done by the normal in the process is 0J\n")

+printf("Work done by the gravity in the process is 0J\n")

+

+//Sample Problem 7-2c

+printf("\n**Sample Problem 7-2c**\n")

+//Using Work Energy theorem

+//W = Kf - Ki

+//Ki = 0

+v_final = sqrt(2* W/mass)

+printf("The final velocity of the safe is equal to %e", v_final)
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diff --git a/24/CH7/EX7.2/Example7_2_result.txt b/24/CH7/EX7.2/Example7_2_result.txt
new file mode 100755
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+**Sample Problem 7-2a**

+The spies transfer 1.534484e+002J amount of energy during the given displacement

+

+**Sample Problem 7-2b**

+Work done by the normal in the process is 0J

+Work done by the gravity in the process is 0J

+

+**Sample Problem 7-2c**

+The final velocity of the safe is equal to 1.167898e+000