The document discusses the slider-crank mechanism, which is commonly used in machines. It notes that the crank is turning at a uniform angular velocity counterclockwise. An example is provided to calculate the instantaneous linear acceleration of points A and B in a slider-crank mechanism diagram given the dimensions and velocity of the crank. Steps for determining the acceleration polygon are referenced to analyze acceleration in the mechanism.

1. Relative Acceleration Lecture Notes

2. The Slider-Crank Mechanism The slider-crank mechanism probably is used in more machines than any other mechanisms. That is why special emphasis should be given to obtaining the velocities and accelerations in this mechanism. Owing to the fact that most acceleration analysis for this mechanism is made when the crank is turning uniformly, it will be assumed that the crank QA is turning in a uniform angular velocity counterclockwise.

3. Example 1: A slider-crank mechanism shown has the following dimensions. QA = 4.5 inches, AB = 14 inches. Determine the instantaneous linear acceleration of A and B. Uniform linear velocity of crank QA is 4.5 ft/sec counterclockwise. Reference: Elements of Mechanism by V.L. Doughtie and W.H. James

4. Steps on determining the acceleration polygon Reference: Elements of Mechanism by V.L. Doughtie and W.H. JamesReference: Elements of Mechanism by V.L. Doughtie and W.H. James Reference: Elements of Mechanism by V.L. Doughtie and W.H. James

5. Steps on determining the acceleration polygon Reference: Elements of Mechanism by V.L. Doughtie and W.H. JamesReference: Elements of Mechanism by V.L. Doughtie and W.H. James Reference: Elements of Mechanism by V.L. Doughtie and W.H. James

6. Steps on determining the acceleration polygon Reference: Elements of Mechanism by V.L. Doughtie and W.H. JamesReference: Elements of Mechanism by V.L. Doughtie and W.H. James Reference: Elements of Mechanism by V.L. Doughtie and W.H. James

7. Velocity by Resolution and Composition Method Reference: Elements of Mechanism by V.L. Doughtie and W.H. James

8. Acceleration Polygon Reference: Elements of Mechanism by V.L. Doughtie and W.H. James

9. Reference: Elements of Mechanism by V.L. Doughtie and W.H. James. © 1954 by John and Wiley and Sons, Inc. Page 97 - 98. Reference: Elements of Mechanism by V.L. Doughtie and W.H. James