Fig. P$4\mathrm{.}71$

$4\mathrm{.}72$ One end of rodAB rests in the corner A and the other end is

attached to cord $BD.$ If the rod supports a $200-N$ load at its mid$-$

point $C,$ find the reaction at A and the tension in the cord.

Fig. P$4\mathrm{.}72$