Question

Given: A mechanism is made up of link OA, AB, and DE. Pins D and E on link DE are constrained to move along straight guides. Link OA is pinned to ground at O and pinned to link AB at A. Link AB is also pinned to link DE at point B. Pin D moves to the right with a speed of vb. For the position shown, find: (a) The location of the instant center for link DE. (10 pts.) (b) The location of the instant center for link AB. (10 pts.) (c) The direction of rotation for link AB -clockwise, counter-clockwise, or instantaneously at rest. (10 pts.) Provide an argument for your answer. E D UA VD

Answer 1

I 13 > VB 156 IU 1 16.J16 PP 3 3 A 924 B 1310 4 S 1 146 112,3 23 , 134, 146, 1st I COLDE E J14 Iis, Ius & Isso Tubo I c of AB EI 13 I 12, I23 & 1 14 & 14 a instantaneous center of DE is point P = I1 = I16 = 14 2 instantanews center of Link AB is I 13 that is poin a Based on the direction of UB e the link as is rotating Counter-clock wid direction about instantanery Center o