Zero Force Members for 3D Trusses Complete

[@AverageNeighbor]

Is a reaction Cx=0? Since all the forces are acting in one plane except Cx

[@aubreymcnamara4598]

I'm wondering if Cy was meant to be under the roller? If that's the case, then the ZFM I see apart from Cx is also Cz (similar to the cases with joints B and D). Cz sticks out from the collinear forces Cy and CG when analyzed in 2D.

[@1963rzr]

this is an old video, please watch this... kzbin.info/www/bejne/nJbVfmxrhLV_g5o

[@1963rzr]

In the video comments it says "zero force members for 3D truss... Notice that also FC , Cx , and Cz are Zero if you study joints F and C (Theorem 1)"

[@aubreymcnamara4598]

@@1963rzr Thank you!!

[@1963rzr]

@@aubreymcnamara4598 you are welcome

[@sarahmustafa4883]

The video was super helpful thank you so much ♥️♥️🙏🏽

[@kenzobrayegerale6189]

how about FC?

[@1963rzr]

How about it?

[@aubreymcnamara4598]

@@1963rzr I was just going to mention it! I noticed that FE, FA, and FB were all in the same plane, but then FC sticks out of that plane.