32. FEA was used to solve the truss problem shown below. The solution for displacements was obtained as 112 = 1 mm, V2 = —1 mm, i<3 = 2 mm, and V3 = —1 mm.

(a) Determine the axial forces P in Elements 2 and 4.

(b) The forces in Elements 3 and 5 are found to be as follows: f'3' = —2,000N, p(5) = 7,070 N. Determine the support reactions ft,,4 at Node 4 using the nodal equilibrium equations.

The element properties are listed in the following table.