WHP03-Q The disk rolls without slipping on the horizontal surface as shown. The disk has a clockwise angular velocity of 10 rad/s and a counter clockwise angular acceleration of 5 rad/s. The radius of disk r is 200 mm. Neglect the distance from the centre of pin A to the edge of the disk (i.e., OA = r). (a) Using the relative velocity analysis, determine the angular velocity (magnitude and direction) of BC and the velocity (magnitude and direction) of pin A relative to the slotted member BC. (b) Find the angular acceleration (magnitude and direction) of BC and the acceleration (magnitude and direction) of pin A relative to the slotted member BC. C A a = 5 rad/s B 60 w = 10 rad/s 3r Answers: (a) BC = 0.5238 rad/s CW, VA/A (on BC) = 3.854 m/s; (b) BC = 29.233 rad/s CW, arel = 1.966 m/s