1. The problem statement, all variables and given/known data A weight W is supported by bar AO and cables AB, AC, and AD. Point A lies in the xy plane, if the bar and cables have the strengths listed below, determine the largest value W may have. Hint given: A FBD of joint A is recommendedto being this problem. Bar AO should be assumed to carry load along its length. Unit vectors point from A to B and from A to C are needed to describe the direction of cable tensions. Since cables are required to be in tension, it should be clear from the figure that AO will be in compression. It is usually not obvious which structural member first reaches its limit load. Loads carried by each member should be obtained in terms of W. Individual failure criteria can then be applied to each member to find W inducing failure in that member. The largest weight that may be supported is the minimum of this set of failure loads. 2. Relevant equations Unit vector equation ΣF=0, ΣFx=0, ΣFy=0, Basic trig 3. The attempt at a solution First I drew out the FBD which was basically exactly the same as the picture given so I didn't find it necessary to post it. Then I found the point coordinates to be: A (15,48,0) in B (15,0,36) in C (0,48,36) in O (0,0,0) in Like the hint suggests, I found the unit vector of AB and AC to be (0,-4/5,3/5) and (-5/13,0,12/3) respectively. Then I multiplied those by the strengths given making the, equal to (0,-1568,1176) for AB and (-538.5,0,1292) for AC. The problem statement says the force of AO is already in it's direction so AO would be (29400,94080,0). From here I don't really know how to go about "Loads carried by each member should be obtained in terms of W." I just need a good push in the right direction. Thank you so much for any help, I really appreciate it!