Question $1$

$1\mathrm{.}5$ Points

For the planar truss shown below, use the Force Method to compute the support reaction R$4.$ Assume that the truss loading and geometry are as shown in Table $1.$

$\backslash$table$[[$Parameter$,$Value$],[P_1(kN),1],[P_2(kN),0],[h_1(m),2\mathrm{.}5],[h_2(m),2\mathrm{.}9],[h_3(m),3\mathrm{.}9]]$

Answer: The support reaction $R_4$ is equal to $($Units: kN$)$:

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