initial commit / add all books

2 files changed, 58 insertions, 0 deletions

diff --git a/3131/CH18/EX18.1/18_1.sce b/3131/CH18/EX18.1/18_1.sce
new file mode 100644
index 000000000..87d9e8c23
--- /dev/null
+++ b/3131/CH18/EX18.1/18_1.sce
@@ -0,0 +1,31 @@
+clear all; clc;
+disp("Ex 18_1")
+//Planar Kinetics of a Rigid Body: Work and Energy
+mb=6//mass of the block,kg
+md=10//mass of the disc,kg
+m=12//mass of the cylinder,kg
+rc=0.1//m
+vb=0.8//m/s
+rd=0.1//m
+wd=vb/rd
+printf('\n\n wd = %0.0f rad/s',wd)
+re=0.2//m
+ve=0.8//m/s
+wc=ve/re
+printf('\n\n wc = %0.0f rad/s',wc)
+rg=0.1//m
+vg=rg*wc
+printf('\n\n vg = %0.1f m/s',vg)
+//For the block
+Tb=0.5*mb*vb^2
+printf('\n\n Tb = %0.2f J',Tb)
+//For the disk
+Td=0.5*0.5*md*rd^2*wd^2
+printf('\n\n Td = %0.2f J',Td)
+//For the Cylinder
+Tc=(0.5*m*vg^2)+(0.5*0.5*m*rc^2*wc^2)
+printf('\n\n Tc = %0.2f J\n',Tc)
+//Total Energy of the knectic system,
+T=Tb+Td+Tc
+disp("Total Energy of the knectic system,")
+printf('\n T = %0.2f J',T)
diff --git a/3131/CH18/EX18.2/18_2.sce b/3131/CH18/EX18.2/18_2.sce
new file mode 100644
index 000000000..9709f5416
--- /dev/null
+++ b/3131/CH18/EX18.2/18_2.sce
@@ -0,0 +1,27 @@
+clear all; clc;
+disp("Ex 18_2")
+m=10//kg
+w=m*9.81//converting mass to weight
+x=1.5//displacement
+Uw=w*x
+printf('\n\n Uw = %0.1f J',Uw)
+//Couple moment M
+M=50//moment in Nm
+theta=%pi/2
+Um=M*theta
+printf('\n\n Um = %0.1f J',Um)
+//at theta=0, spring is stretched by 0.25m and when theta=90, spring is stretched by 2.25m
+k=30//spring constant in N/m
+a=0.25//at theta=0, spring deflection in m
+b=2.25//at theta=90, spring deflection in m
+Us=-((0.5*k*b^2)-(0.5*k*a^2))
+printf('\n\n Us = %0.1f J',Us)
+//Force P
+P=80//N
+y=%pi*3/2//displacement in m
+Up=P*y
+printf('\n\n Up = %0.1f J\n\',Up)
+//Total work of all the forces,
+U=Uw+Um+Us+Up
+disp("Total work of all the forces,")
+printf('\n U = %0.0f J',U)