Question $3$

$0\mathrm{.}75pts$

A truss analysis includes consideration of Joint $A$ as shown. If $P$ is $4\mathrm{.}7kN$ and $Q$ is $6\mathrm{.}6kN,$ find member force $AB$ in $kN.$ Use positive for tension and negative for compression. The horizontal distance from $A$ to $B$ is $6m,$ the horizontal distance from $A$ to $C$ is $4m,$ and the vertical distance from $A$ to both $B$ and $C$ is $5m.$

Question $4$

$0\mathrm{.}75pts$

A truss analysis includes consideration of Joint $A$ as shown. If $P$ is $4\mathrm{.}4kN$ and $Q$ is $8kN,$ find member force $AC$ in $kN.$ Use positive for tension and negative for compression. The horizontal distance from $A$ to $B$ is $6m,$ the horizontal distance from $A$ to $C$ is $4m,$ and the vertical distance from $A$ to both $B$ and $C$ is $5m.$