Static equilibrium problem -- with a pulley

[J-dizzal]

Homework Statement

Homework Equations

sum of forces equal to zero.

The Attempt at a Solution

 

[TSny]

Looks like you left out a moment arm in one of your terms in ΣM_A.

 

[Dr. Courtney]

I can't really follow your work computing components of forces and making sure each force contributes to torque.

 

[J-dizzal]

Thank you, i didnt notice the 6in on the pulley at first.

Looks like you left out a moment arm in one of your terms in ΣMA.

I can't really follow your work computing components of forces and making sure each force contributes to torque.

I updated my original post but I am still getting the same answer haha.

 

[TSny]

Note that F_DBsinθ is a force component, not a moment. What's the moment arm for this force?

 

[J-dizzal]

Note that F_DBsinθ is a force component, not a moment. What's the moment arm for this force?

oh crap sorry, let me finish that equation.
Ok, for the sum of moments i got 830.5 lb, now let me correct the rest of the equations and see what i get for an answer to the magnitude of A.
edit. 880.7 lb
edit2. 1761.5

 

[TSny]

In the ΣM_A equation, your last term is -F_DB. Is this meant to be there?

 

[J-dizzal]

In the ΣM_A equation, your last term is -F_DB. Is this meant to be there?

no its not supposed to be there, I've change it again, I've edited my original post. there is still something wrong with it though...

 

[TSny]

Check your calculation of A_x. Looks like you have it set up correctly, but made some sort of mistake in plugging the numbers in your calculator.

 

[J-dizzal]

Check your calculation of A_x. Looks like you have it set up correctly, but made some sort of mistake in plugging the numbers in your calculator.

thanks.
I got a new HP 300s calculator in the mail today, still getting used to it...