An Axial load $\backslash (\backslash$mathrm$\{$P$\}=750\backslash$mathrm$\{$kN$\}\backslash )$ is applied on the bar as shown in the Figure below. Model the bar with two finite element bar elements and using the elimination approach for handling the boundary conditions;

$($i$)$ Determine the nodal displacements at each node

$($ii$)$ Determine the stress and strain in each of the elements

$($iii$)$ Determine the reaction forces