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clear
//Given
dia = 15 //mm - The diameter of the rod
h = 0.5 //mt - The freely falling height
A = 3.14*(dia**2)/4 //mm2 The area of the crossection
E = 200 //Gpa -Youngs modulus
L = 750 //mm - The total length of the rod
G = 80 //gpa - Shear modulus
N = 10 //number of live coils
d = 5 //mm the diameter of live coil
m = 3 // the mass of freely falling body
H = 500 //mm -from mass to spring
F= m*9.81 //Kg the force due to that mass
p = 3 //KN-m _ the load applied
//e = e_rod + e_spr
//e_rod
e_rod = p*L*(10**-3)/(A*E) //mm The elongation due to freely falling body
//e_spr
e_spr = 64*F*(dia**3)*N*(10**-3)/(G*(d**4)) //mm The elongation due to spring
e = e_rod + e_spr //mm The total elongation
p_dyn =F*(1+((1+(2*H/e))**0.5))
Stress_max = p_dyn/A //MPa - The maximum stress in the system
printf("\n The maximum stress in the system %0.2f MPa",Stress_max)
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