Q$1)$ Consider the space truss shown below. The supports at nodes $1,2,3$ and $4$ are ball$-$bearing and are slotted joints.

$P_1=9(kN)$

$P_2=13\mathrm{.}2(kN)$

$A=0\mathrm{.}0026(m^2)$

$E=195(GPa)$

Will be solved in Matlab

Number the elements

Boundary Conditions

Element sitiffness matrices

Global stiffness matrix for the structure

Displacements at node $5$

Reactions at Nodes $1,2,3$ and $4$

Strees in each element

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