Problem $16\mathrm{.}041-$ Rotating disks brought to contact

Disk $\backslash ($ A $\backslash )$ has a mass of $6\mathrm{.}000$ kg and an initial angular velocity of $360$ rpm clockwise; disk $\backslash ($ B $\backslash )$ has a mass of $3\mathrm{.}000$ kg and is initially at rest. The disks are brought together by applying a horizontal force of magnitude $20$ N to the axle of disk $\backslash ($ A $\backslash ).$ Assume that $\backslash (\backslash$mu$\_\{$k$\}=0\mathrm{.}15\backslash )$ between the disks. Neglect bearing friction.

Problem $16\mathrm{.}041.$a $-$ The angular acceleration of each disk

Determine the angular acceleration of each disk.

The angular acceleration of disk $\backslash ($ A $\backslash )$ is

$\backslash (\backslash$mathrm$\{$rad$\}/\backslash$mathrm$\{$s$\}^\{2\}\backslash ).$

The angular acceleration of disk $\backslash ($ B $\backslash )$ is

$\backslash (\backslash$mathrm$\{$rad$\}/\backslash$mathrm$\{$s$\}^\{2\}\backslash ).$