$2$A$.$ Identify $($caption$)$ and fully label the Figure below;$(6)$

$4$

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$2$BI$.$ Determine the critical volume fraction of fibers and comment on its significance. Assume, ${}_F=0\mathrm{.}7$GPa,${}_m=0\mathrm{.}05$GPa,$E_f=350$GPa and $E_m=3\mathrm{.}5$GPa

$2$BII. Determine the fraction of load carried by the fibers, if $V_f=60\%.$ Use data in Q$2$BI$.$