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clear
mass = 4 //kg
dist = 1 //mt freely falling distance
l = 1500 //mm length of rod
d = 15 //mm diameter
l_ab = 6.71 //inch
l_bc = 8.29 //inch
E = 200 //GPA youngs modulus
k = 4.5 // N/mm stiffness costant
F = mass*9.81// The force applying
Area = 3.14*(d**2)/4
// Two cases
//youngs modulus
e_y = F*l/(Area*E*(10**3))
// stiffness
e_f = F/k
//total
e = e_y +e_f
k = 1+(2/(e*(10**-3)))
stress_max_1 = F*(1+(k**0.5))/Area
printf("\n The maximum stress is: %0.3f MPa",stress_max_1)
//for the rod without washer
k2 = 1+(2/(e_y*(10**-3)))
stress_max_2 = F*(1+(k2**0.5))/Area
printf("\n The maximum stress for the rod without washer is: %0.3f MPa",stress_max_2)
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