A8.4 - A four-bar linkage is shown below. Lines to find the instant centers are already drawn on the figure. (a) Use them to calculate and confirm that wz =

0.428 rad/s ccw and Wq =0.287 rad/s cw. (b) Draw* the acceleration vector loop diagram, and use it to (c) find the magnitude and direction of a, and a.. (d) Find the magnitude and direction of the absolute acceleration of point P on link 3. Tip: use a scaled acceleration image of link 3. Link 1 is 100 in. long. Link 2 is 40 in. Iong Link 4 is 60 in. long. \omega_{2}=1.5 \mathrm{rad} / \mathrm{s} \mathrm{ccw} \alpha_{2}=1 / 2 \mathrm{rad} / \mathrm{s}^{2} \mathrm{cw} *An acceleration diagram has been started for you on this page. It establishes a drawing scale which you should use to complete the diagram. However, feel free to use your own paper and draw at any scale you find convenient.