Example$-1$ Use graphic solution

The four$-$bar linkage in the posture shown in Fig. is driven by crank $2$ at a constant angular velocity ${}_2=900re\frac{v}{m}$inccw. For this posture, determine

$-$the angular velocities of coupler link $3$

$R_{BA}=101\mathrm{.}6mm,$

$R_{CB}=457\mathrm{.}2mm,$

$R_{CD}=279\mathrm{.}4mm,$

$R_{DA}=254mm$