Two struts are used to support a $30-$kip load as shown in Fig. P$5-33.$ Strut AB is made of $2024-$T$4$ aluminum alloy $($E $=10,600$ ksi$)$ and has a cross$-$sectional area of $1\mathrm{.}25$ in$\mathrm{.}2$ Strut BC is made of structural steel $($E $=29,000$ ksi$)$ and has a cross$-$sectional area of $2\mathrm{.}50$ in$\mathrm{.}2$ Determine

a$.$ The maximum normal and shearing stresses in strut AB$.$ b$.$ The maximum normal and shearing stresses in strut BC$.$ c$.$ The lengthening or shortening of both struts. d$.$ The horizontal and vertical displacements of pin B