Problem 003-ms | Method of Sections

From section to the left of a-a
$\Sigma F_V = 0$

$\frac{5}{\sqrt{29}}F_{BE} = 80 + 60$

$F_{BE} = 150.78 \, \text{ kN tension}$           answer
 

 

$\Sigma M_E = 0$

$5F_{BC} = 6(80) + 2(60)$

$F_{BC} = 120 \, \text{ kN compression}$           answer
 

$\Sigma M_B = 0$

$5F_{DE} = 4(80)$

$F_{DE} = 64 \, \text{ kN tension}$           answer