$(9$ points$)$ Difficulty $(2/5)$

A force of $P=27\mathrm{.}1lb$ is required to pull the stopper $($DE$).$ The dimensions of the symetrical stopper$-$puller device are

given in the table above. Determine the internal forces acting on member BCD given in the table below. Also, determine

the minimum pin diameter for pin C given that it is made of cast aluminum and has a factor of safety of $3\mathrm{.}9$ against

fracture.

Forces: $($Denote nightward or upward forces with positive values; leftward or downward forces with negative values.$)$

$D_{\text{p}\text{i}\text{n}\text{C}}=$

be sure to include units with your answers