$2)$The structure shown in Figure $2$ is loaded at point $C$ with a downward force of $1\mathrm{.}5$kip.

$($a$)$ Identify whether members $AB$ and $BC$ satisfy the requirements to be classified as rods$/$bars$.$

$($b$)$ Calculate all the external reactions.

$($c$)$ Calculate the magnitude and nature $($tension or compression$)$ of the axial load on member $BC.$

$3)$ Redo problem $2$ for the structure shown in Figure $3.$ How does moving the $1\mathrm{.}5$ kip force from point $C$ to point $B$ affect member $BC?$