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//Example 9_2
clc();
clear;
//To calculate the cross sectional area and how far the ball will stretch the wire
m=40 //units in Kg
g=9.8 //units in meter/sec^2
F=m*g //units in Kg meter/sec^2
stress=0.48*10^8 //units in Newton/meter^2
A=F/stress //units in meter^2
r=sqrt(A/%pi)*10^3 //units in mm
printf("The radius of the wire should be r=%.1f mm and the cross sectional area is A=",r)
disp(A)
printf("meter^2")
y=200*10^9 //units in Newton/meter^2
strain=stress/y
L0=15 //units in meters
deltaL=strain*L0 //units in meters
deltaL=deltaL*10^3 //units in mm
printf("\nThe ball stretches the wire a distance of deltaL=%.2f mm",deltaL)
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