Mechanisms + Acceleration Diagram

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The discussion focuses on understanding the components of acceleration for a point on a rotating disk, specifically addressing a previous exam question. It highlights that the angular velocity contributes to centripetal acceleration, while angular acceleration results in tangential acceleration. Participants suggest using the same method for calculating angular acceleration as was used for the first part of the exam question. Additionally, it is recommended to refer to course notes or textbooks for the necessary formulas. The conversation concludes with a question about creating the resultant acceleration diagram by combining the individual components.
cjh200
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Studying for my exams I came across this from a previous exam. I could do part i but could not do the second part. If someone could explain how to or provide their working would be appreciated and for part i their working to compare. Thanks for the time.
 

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There are two components of the acceleration of point A. The angular velocity of the disk causes an acceleration towards the center of the circle. The angular accleration of the disk causes an accleration along the tangent to the circle.

Once you have the angular accleration vector, use the same method as for the first part.

If you don't know the formulas for the components of the accleration, check your course notes or textbook.
 
Thanks and got that sorted. Is it just a matter of drawing the resultant line for each link and then combing to make the acceleration diagram??
 
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