%Problem 7
clc; clear all;
F1=100;
F2=100;
l=1;
%7.1
%sumFy= -F1-F2+FCy=0
FCy=F1+F2
%sumMaboutC= F1*2*l+F2*l-FEx*l=0
FEx=(F1*(2*l)+F2*l)/l
%sumFx= FEx+FCx=0
FCx=-FEx
FC=sqrt(FCx^2+FCy^2)

% FCx = -300
% FC = 360.5551=100*sqrt(13)  (lb) (A)

%7.2
theta=atan(1/2);
% AD*sin(theta)=F1
AD=F1/sin(theta)
% AD = 223.606  (lb) (NONE)

FCy =

   200


FEx =

   300


FCx =

  -300


FC =

     3.605551275463989e+02


AD =

     2.236067977499790e+02

Published with MATLAB® 7.4