How Do You Calculate Reactions at Supports in Equilibrium Problems?

[Cursed]

Homework Statement

Draw the free-body diagram of the structure by isolating it from its supports at A and E. Determine the reactions at A and E.

[PLAIN]http://img715.imageshack.us/img715/7161/physics.png

Homework Equations

M = (F_y)*x, or M = (F_x)*y
where "x" represents horizontal distance and "y" represents vertical distance. "M" is the moment.

The Attempt at a Solution

I found Ax.

When I convert the moment (curved, pink arrow) to a force, I find that the moment and force at A must be equal and opposite to the 200 ft-lb moment.

-200 ft-lb = (2 ft)*A_x

A_x = -100 ft-lb

I have no idea how to find A_y or E.
The book says A_y = -225 lb; E = 625 lb

Can anyone help me get started? I'm not sure how to go about finding those two values!

 

[Cursed]

60 views and no answers?

can someone help me with this?

 

[PhanthomJay]

Have some patience, please. Well, the supports aren't showm very clearly; I had to work the problem backwards and it appears that the frame is roller supported at E and pinned at A. Your method for the calculation of Ax is not correct...Ax must balance the applied force. Sum moments about E to solve for Ay; sum moments about A to solve for Ey; check your work by ensuring that F_net_y =0