(Solved): For the hyperstatic lattice structure in Figure 5, determine the force in the frames 1-2, 2-3 and 2- ...

For the hyperstatic lattice structure in Figure 5, determine the force in the frames 1-2, 2-3 and 2-4 using the matrix method. We give: E = 200 GPa Section areas: 1−2 = 300 mm2 2−3 = 200 mm2 Consider the following directions for the members: 2=>1; 2=>3; 2=>4 Figure 5