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 Vp. 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. VD

Answer 1

I AB WAB K Б IDE EL AU VA INDE B D & @IDB) LE IDE) 3.) B Slep-1 Draw line line i to Up at D at D i e and also draw line line t to ver i.e E we get (IDE). "It is instant center on DE! Step-2 join IDE and at alraw vecher to this rechor ces velocity rector of B B. ie line to AB at which meets the extended line at is instant Center link AB 1 B I DE IB Slep Draw BIDE I AB I AB of Step 4 Draw Vector I to A I AB at A. i e le A