Chapter 16, Problem 55P

Problem 1 If the block at C is moving downward at 4 ft/s, determine the angular velocity of bar AB at the instant shown. @AB 2 ft 3 ft 30° C vc = 4 ft/s

2. The square plate is constrained with the slots at A and B. At the instant when 0= 30°, point B is moving at 5 m/s down. At this 0.3 m instant, tell me the angular velocity of the plate. What is the velocity of point D? What is the velocity of point C? 03 m 0= 30

End A of the 3.6-ft link has a velocity of 3.7 ft sec in the direction shown. At the same instant, end B has a velocity whose magnitude is 4.4 ft/sec as indicated. Find the angular velocity w of the link in two ways. The angular velocity of the link is positive if counterclockwise, negative if clockwise. A VA = 3.7 ft/sec 40° Answer: w= 3.6' B B VB = 4.4 ft/sec rad/sec