5/113 The system of Prob. 5/82 is repeated here. Crank OA is rotating at a counterclockwise angular rate of 9 rad/s, and this rate is decreasing at 5 rad/s. Determine angular acceleration aaB of link AB for the position shown. 100 mm 9 rad/s 30° 80 mm YA AB = 200 mm PROBLEM 5/113

5. For the following pin-collected link assembly, link AO is pinned at point O, and moves with angular velocity W and angular acceleration a (both counterclockwise). 4) if W = 4.0 rad/s and a = 6.3 rad/s2, length I = 1.5 m, and angle 0= 36°, what is the magnitude of the angular velocity of link AB? Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper unit. 0.5 m 0, a B Your Answer: Answer units

For the mechanism composed of the discs A and B, and the BCD bar; Find the angular velocity of disk A and the velocity of point D. From the table, use the values ​​in the last row for the velocity of point C and the distances and angle marked in the image. Notes Discs A and B have a non-slip contact. Point C is bolted to the yellow collar and bar B. The movement of the collar is defined by the gray bar, which is fixed. The bolt allows the BDC bar to rotate at that point. The BCD bar is a single rigid body

The elements of a power hacksaw are shown in Figure 2. The saw blade ismounted in a frame that slides along the horizontal guide. If the motor turns the flywheel at a constant counter-clockwise speed of 60 r.p.m. Make use of vector diagram to calculate: the acceleration of the blade for the position where angle ? = 90o The corresponding angular acceleration of the link AB.