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clear
//Given
l = 400 //mm - Length
b = 300 //mm - breath
F = 20 //KN _ the force applied on the beam
F_d = 0.75 //KN-m - The force distribution
d = 2 //mt - the point of interest from the free end
//calculations
//From moment diagram
M = F*d - F_d*d*1
I = b*(l**3)/12 //mm4 - Bending moment diagram
c = l/2 // the stress max at this C
S = I/c //The maximum shear stress
shear_max = M*(10**6)/S //MPa - the maximum stress
printf("\n The maximum stress at 2 mt is %0.2f MPa",shear_max)
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