Truss compression and tension forces help

gozita73
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The space truss showin has compression and tension forces acting in the members as shown.

t6pfg1.png


Force F is 10kN, determine the three unknown forces (F1, F2 and F3).


I know that it should be the summation of Fx, Fy and Fz, however for F1, there is no reaction force, so I don't know what to do.

Can somebody please help?
 
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Attach A & B to a vertical wall.
What force is needed directly on the wall at the level of F3 to stop the wall from being pulled over by F.
 
so the x component of F1 would be supported by the wall??
 
bump ?
 
gozita73 said:
so the x component of F1 would be supported by the wall??
I'm not too good looking at 3D, but something appears wrong with your picture. There appears to be no way for the x component of the F1 force to be balanced at the joint, since the other 3 members all lie in the yz plane, unless the picture is misleading or incomplete?
 

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