Problems with while function

close all

clear all

clc

syms x 

Load=10000;

Bridge_Span=20.825;

Wheelbase=3.2;

BCM=10450;            %bridge crane mass

M=1.17;               %factor of safety

F=9.8*M*0.5*((BCM/2)+Load);

Delta_max_allowed=(1/800)*10;

J=((0.28*0.5^3)/12)-2*((0.134*0.468^3)/12);

E=2*10^11;

while (2*(int([F*x*(1*x)/(2*E*J)],x,0,5))<0.0125)

      J=J+0.01
  end

How can I increase the 2nd moment of area (J) until the deflection(the expression) is less then 12.5 mm or (0.0125)

Answer 1

[Sean de Wolski]

How about fzero() to find where 'f(x)-0.0125 = 0'?