02 57° X L₁ = 162 L2 = 40 = L4 122 L3 96 = B 04 Fourbar linkage x 3. The linkage above has link 1 at -36° and link 2 at 57° in the global XY coordinate system. Find w4, VA and VB in the global coordinate system for the position shown if w2=20 rad/sec CCW. Using (a) the velocity difference graphical method, (b) the instant center method, (c) an analytical method.