For the figure below $($also given in assignment #$4),$ determine whether or not the bracket will fail at:

i$.$ the critical points along sections A$-$A$.,$ assuming the material is $316$ stainless steels, using the Von$-$Mises criterion,

ii$.$ the critical points along section $B-B,$ assuming the material is brittle with ultimate strength of $300$ MPa using the maximum normal stress theory.

Find the safety factors based on each failure theory in i and ii above.