Need help with an acceleration diagram for a 4-bar linkage

[neeboy74]

Hello to all, especially (hopefully) you math/engineering nerds out there: I have a question about an acceleration/mechanism diagram i have to draw. I've attached a picture. I'm trying to complete the acceleration diagram, and it's got me too confused. On the left is the mechanism as it would be built. The colored arrows represent acceleration; the jagged lines on the left/middle indicate POSSIBLE directions for acceleration. The solid lines immediately to the right are the ones I chose to use. On the far right is the acceleration diagram I've completed, but I don't know if it's right. Can someone knowledgeable in these things advise me if I did it right? Thanks in advance for any replies!

 

[Valkarie]

Your diagram looks correct to me. The arrows represent the direction of acceleration of each component, and the solid lines in the middle show the direction of force applied to the components. The solid lines on the right indicate the direction of the total acceleration, which is the vector sum of all of the accelerations of the individual components. I hope this helps!