Dynamics Essential $12-7$

Crank $AB$ has a length of $l_{AB}=20in$ and angular acceleration $1\mathrm{.}22ra\frac{d}{s^2}.$ The disk has a radius of $r=5$ in and rotates clockwise at constant angular velocity $3\mathrm{.}48ra\frac{d}{s}.$

Determine the angular velocity of crank $AB$ and the acceleration of block $B$ in in $\frac{?}{s^2}.$

Show all steps: $(1)$ classify motion,

$(2)$ relative motion equation, $(3)$ kinematic diagrams,

$(4)$ scalar equations. $(5)$ solve for unknowns.