The panel assembly and attached $x-y-z$ axes rotate with a constant angular velocity $=1\mathrm{.}0ra\frac{d}{sec}$ about the vertical $z-$axis. Simultaneously, the panels rotate about the $y-$axis as shown with a constant rate ${}_0=2\mathrm{.}1ra\frac{d}{sec}.$ Determine the angular acceleration $$ of panel A and find the acceleration of point $P$ for the instant when $=90.$

Assume $a=12$ in$.,b=16$ in$.,c=14$ in$.$

Answers:

$=1$

$i+$

$j+$

$k$