Case Study: The gentle Palestinian knight against the invading excavator. Piston-cylinder assembly Part A: a) Draw the kinematic diagram of the given excavator. b) List the types of links (order of link) available in the excavator and their number. c) Determine the DOF of the excavator (put the number of links & joints on the figure). [Hint: The excavator's body and wheels are grounded] d) If the three hydraulic piston-cylinder linkages were destroyed by the Palestinian hero, what would be the new DOF? Deduce the character of the mechanism. Part B: a) A supportive airplane arrives to the scene, and with a dispenser mechanism, it throws Aid bags to the innocent civilians. For the mechanism below, determine if the statements in the table are "true" or "false".

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