Problem 2. (15 pt) A worker unloads 20 kg sacks of apples from a conveyor and loads them onto a shute, from whence, they are dispatched. He loads for 2h per

day at a rate of 5 sacks per minute. The height of the conveyor is 60cm and the height of the shute is 100 cm. There is an angle of asymmetry of 45 degree and the load is held 30 cm from the body. 1. Use the NIOSH equation to calculate the RWL and the LI (lifting index). Lifting index is the ratio between the load and the RWL. 2. Comment on the safety of the task and identify the risk factors.