Strength of materials -- Normal stresses and Shear stresses

[skatoulis100]

Homework Statement

https://ibb.co/imui5b[/B]

hey i need to calculate max normal stress at BC and max shear stress at b and c
is my torque equation right?

Homework Equations

The Attempt at a Solution

so i thought
Σma=0 Cx*6+80*6+80*2=0
i ll find cx
and then ΣFx=0
and ΣFy=0

 

[Chestermiller]

Your moment balance is correct.

 

[haruspex]

Cx*6+80*6+80*2=0

Which way are you defining as positive for forces in the X direction, to the left or to the right?