The frame shown is fixed at $D,$ is pinned at $B$ and has a hydraulic cylinder connecting A and $D.$ The

dimensions are, $a=3\mathrm{.}4ft,b=9\mathrm{.}9ft,$ and $c=6\mathrm{.}5ft.$ If the frame is loaded with a box weighing, $W=226$

$lb,$

a$.$ What is the force in the cylinder necessary to hold the box in the position shown.

b$.$ What is the force in the cylinder necessary to hold the box in position if the horizontal arm is

rotated an angle, $=36?$