Question 3 (12 marks) The worker reached for the a specific small part a short distance away in the workplace, searched for the part, picked it up, and then placed it in a vise. At that time, the worker received a 5-minute phone call. Then, the worker resumed the work and rotated the screw handle of the vise three turns to hold the part between the vise jaws. In rotating the screw handle, he had to grasp and regrasp the handle three times due to the limited rotation ability of his own wrist. On the final turn, he applied additional torque to tighten the vise. (a) Write a list of the therbligs that comprise this motion sequence and label each basic motion with a brief description. (b) Identify some areas for possible study that might improve the method, indicating the nature of the improvement that might result (at least 4 suggestions for improvement). Description Seq. Therblig Therblig name symbol 1 2. 3. 4. 5 6. 7 8