$3\mathrm{.}21$ For the four$-$bar linkage in the posture shown, link $2$ has an angular velocity of $56ra\frac{d}{s}ccw.$ Find the velocity of point $C.$

Figure P$3\mathrm{.}21R_{A{O}_2}=150mm,R_{BA}=R_{B{O}_4}=250mm,R_{O_4{O}_2}=100mm,$ and $R_{CA}=300$mm Answer: Vc $=9\mathrm{.}028$m$/$s or $9028$mm$/$s$.$