initial commit / add all books

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diff --git a/3594/CH2/EX2.3/ex2_3.sce b/3594/CH2/EX2.3/ex2_3.sce
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+

+clc

+//given

+m1=500//lb ft^2

+m2=1500//lb ft^2

+k=150//lb ft^2

+w1=150//rpm

+

+N=(w1*m1)/(m1+m2)

+printf("Angular velocity at the instant when speeds of the flywheels are equalised is given by %.2f r.p.m\n",N)

+//kinetic energy at this instance 

+ke1=(1/2)*((m1+m2)/32.2)*((%pi*N)/30)^2

+printf("The kinetic energy of the system at this instance is %.2f ft lb\n",ke1)

+printf("which is almost equal to 480 ft lb \n")

+//initial kinetic energy

+ke0=(1/2)*((m1)/32.2)*((%pi*w1)/30)^2

+printf("The initial kinetic energy of the system is %.2f ft lb\n",ke0)

+printf("which is almost equal to 1915 ft lb \n")

+//strain energy = s

+s=ke0-ke1

+printf("strain energy stored in the spring is %.2f ft lb which is approximately 1435 ft lb\n",s)

+

+x=((1435*2)/150)^.5

+printf("Maximum angular displacement is %.2f in radians which is equal to 250 degrees\n",x)

+//na1 and na are initial and final speeds of the flywheel 1 and same nb1 and nb for flywheel 2 

+na=2*N-w1//w1=na1

+nb=2*N-0//nb1=0

+printf ("Speed of flywheel a and b when spring regains its unstrained position are %.2f rpm and %.2f rpm respectively\n",na,nb)