Given: Link $AB,$ of width $b=2$ in$.$ and thickness $t=\frac{1}{4}$ in$.,$ supports the end of a beam.

The average normal stress of the link is $18$ksi and the average shear stress in

each of the two pins is $10$ksi.

Find: $,$ a$)$ The diameter $d$ of the pins.

b$)$ The average bearing stress in the link.