For the fan in number 4, determine the magnitude of the acceleration at P when the blades have turned the 2 revolutions. a. 0 ft/s² b. 3.500 ft/s² C. 115.95 ft/s² d. 116.00 ft/s²

1. How many points of contact are used to establish the following datums ? A _____________ B ____________ C _____________ Identify the following items for each of the datum targets :a) the datum reference, b) the specified number on the datum, c) the area size and the shape.

part b and c , (end-effector point A)

Q12. The simple connecting rod mechanism shown in Figure Q12 has a connecting rod length AB of 142mm and a crank radius OA of 46mm. The connecting rod has a centre of gravity C, which is located 32mm from end A. a) b) c) d) e) When the crank angle 0 is 305° and the crankshaft speed (w) is 6500rpm clockwise as shown, determine by kinematic analysis: The magnitude and direction of the angular velocity of the connecting rod. The magnitude and direction of the velocity of the piston. The magnitude and direction of the angular acceleration of the connecting rod. The magnitude and direction of the acceleration of the piston. The magnitude of the acceleration of the centre of gravity (C) in the X and Y directions. Bo a Fig. 12 Connecting Rod Mechanism A Ꮎ a) b) c) d) e) 131.2 rad/s (ACW) 30.6 m/s to the left 122782.7 rad/s² (ACW) 9953.8 m/s² to the right x: 11712.9 m/s² to the right y: 13524.2 m/s² upwards 4