Posted by **AMK** on Saturday, May 18, 2013 at 9:43pm.

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E .

We start with the classification of the degrees of freedom as "free" or "constrained".

From the geometry of the truss, we see that we have:

Free DOF x and y at B, C, and D.

Constrained DOF x and y at A and E .

Question 1: Use MATLAB to find the axial forces in the bar.

Order the vector {X} of unknown axial forces in the bars as:

- Physics needs help -
**PsyDAG**, Sunday, May 19, 2013 at 5:04pm
Indicate your *specific* subject in the "School Subject" box, so those with expertise in the area will respond to the question.

- Physics -
**AMK**, Sunday, May 19, 2013 at 6:40pm
The subject is physics, simonsay is who I wanted to answer it, can you answer it yourself or you don't know?

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