Question 3. a) A personnel working in a tea-shop will fill the tea-urn for 6 times as shown in the Fig.1 in the 8-hour working period. The carboy is transported from a height of 20 cm to a height of 110 cm. These carboys weigh 20 kg, and it is quite difficult to grasp and lift it These carboys, which are 10 cm far from the center of gravity of the employee, are removed with a turning angle of 15 degrees to a distance of 40 cm from the employee. By calculating the NIOSH lifting index, please develop ergonomic improvement suggestions by identifying possible risk factors if you find out that the job is risky Fig. 1 RWL-LC (51) X HM VM DM x AM FM CM Lifting Index (LI)= RWL - Weight HM = 25/H ; VM = 1-(0.003|V-75); DM = 0.82+(4.5/D); AM = 1-(0.0032A); FM = 0.75; CM = 0.90 b) Please determine the probable risk factors and suggest ergonomic solutions for the second figure. Fig. 2