The angle $\backslash$theta $=35$ degrees. The $3-$kg slender bar has length L$=2$mm$.$ The $5-$kg homogeneous disk has radius R$=0\mathrm{.}5$m$.$ The coefficient of static friction between the disk and the surface is $\backslash$mu s$=0\mathrm{.}2,$ and the coefficient of kinetic friction is $\backslash$mu k$=0\mathrm{.}15.$ The system is released from rest in the position shown. The moment of inertia of a disk is $(1)/(2)$mR$^(2),$ and for a slender rod is $(1)/(12)$ mL$^(2)$

$1.$ What is the angular acceleration of the disk at the instant of release?