Question

I NEED CLEAR HANDWRITING

Question 3 30 Points 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 V.. 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 B VD

Answer 1

A В (a) DE of For instant centre for link draw perpendiculars from the Velocity vectory D and E which meet at a point that instant centre. VE IC the ;܀ B as (b) For link AB, CA Velocity will be in the VA 2nd quadrant VA VA + VB/A. = -1 + will i S-i + i Clearly the direction of motion for link AB is anticlockwise. IC