Segment $(1)$ is made of solid aluminum $($E $=70$ GPa$)$ and is $20$ mm in diameter. Segment $(2)$ is also

solid aluminum and is $24$ mm in diameter. Segment $(3)$ is made of steel $($E $=200$ GPa$)$ and is $16$ mm

in diameter. Determine the following:

$($a$)$ Displacement of B relative to A$,\backslash$delta B$/$A $($Solution: $0\mathrm{.}364$ mm $)$

$($b$)$ Displacement of C relative to A$,\backslash$delta C$/$A $($Solution: $0\mathrm{.}899$ mm $)$

$($c$)$ Displacement of D relative to A$,\backslash$delta D$/$A $($Solution: $0\mathrm{.}302$ mm $)$