2) A worker lifts cartons of grapes from a conveyor onto a pallet. The cartons weigh 20 kg each and are 30 cm. The worker grasps the middle of each carton, as there are no handles. The center of gravity of the load is 50 cm from the worker's back. The height of the pallet adjusts automatically to 80 cm and the height of the conveyor is 70 cm above the floor. The worker turns by 45 each time a carton is transferred. The worker performs 5 lifts/min for 1 hr per day. a) Calculate the Recommended Weight Limit (RWL) and Lifting Index (LI), where: = RWL 23 kg x HM x WM x DM x AM x FM x CM HM = 25/H VM 1 0.003 |V - 75| DM 0.82+(4.5/D) AM 1 0.0032 x A FM = 0.80 CM = 1 for good coupling, 0.95 for fair coupling, and 0.9 for poor coupling b) With the calculated RWL and LI values, interpret the results and provide feedback about whether or not the task is risky. c) Identify 2 main risk factors for the task that contribute to the level of risk. d) Based on these risk factors, suggest two possible engineering controls to reduce the risk of this task. Be specific. Provide a description for how the controls will alter the task. Please note that the weight of the cartons is fixed, thus you cannot suggest reducing the weight of the carton as a control.