(Solved): For the crossed four bar mechanism shown in Fig.2, The dimensions of various links are \( C D= \) \ ...
For the crossed four bar mechanism shown in Fig.2, The dimensions of various links are \( C D= \) \( 65 \mathrm{~mm} ; \mathrm{C} \mathrm{A}=60 \mathrm{~mm} ; \mathrm{DB}=80 \mathrm{~mm} \); and \( \mathrm{AB}=55 \mathrm{~mm} \). If the crank CA rotates at \( 120 \mathrm{rpm} \), find the velocity of \( \mathrm{A} \) and the angular velocity of DB, using instantaneous velocity method.