2. Locate the instantaneous center for bar BC. Use it to find the velocity of point C. 6 ft 3ft o=2 rad/sec o-3 rad/sec 6.5 ft Used with permission from "Engineering Mechanics: Dynamics." McGil/King, 4th Ed., 2003 The IC for bar BC is located on a line extended from point A to point B. 4 feet to the right of point B. vc= -9i – 12) ft / see The IC for bar BC is located at point A. ic= -9i - 123 fti sec The IC for bar BC is located on a line extended from point A to point B. 3 feet to the left of point B. vc -6i ft/ sec None of the above

B W= VC = VA = rad/s A ladder is falling! The ladder has a length of 5 m. If is currently 20° and B is moving downward at 3 m/s, find the rotational speed of the ladder, the speed of the center of the ladder, and the speed of point A. m/s 1 m/s Ꮎ A CC BY UBC Engineering

The velocity of point C of the robotic arm is vc = -0.15i + 0.42j (m/s). Figure 760 mm 40° B 920 mm- 30 < 1 of 1 Part A What is the angular velocity of arm AB? (Figure 1) Enter the x, y, and z components of the angular velocity separated by commas. WAB x¹ WAB Submit Part B y' WBC x WBC WAB 7 = Request Answer Y' What is the angular velocity of arm BC? Enter the x, y, and z components of the angular velocity separated by commas. Π| ΑΣΦ | Η WBC z = vec IVE ΑΣΦ | | vec ? ? rad/s rad/s Constants

A robotic arm is made of two links. The input link AB describes a full mode of rotation causing link BC to slide along collar C. The angular velocity of link AB is measured to be as 10 rad's in clock wise direction, whereas the angular acceleration is determined as 20 rad's' describing the same direction of the angular velocity. Determine the following: a) The angular velocity of link BC b) The angular acceleration of link BC c) The relative velocity of link BC with respect to the collar. d) The relative acceleration of link BC with respect to the collar. e) The Coriolis acceleration. s t B 1.8 m 30 2 m