Problem 3. (20 pt) NIOSH (1991) has developed an equation for calculating the recommended weight limit (RWL) for a specific lifting task. RWL-LC x HM X XM x DM x AM

x FM x CM NIOSH method can be found in the publications of the Institute (eg. PB91-226274) or http://wonder.cdc.govy/wonder/PreyGuid/p0000427/p0000427.asp#head005001001000000 Please use Figure of lift task to illustrate the terms (LC, HM, XM, DM, AM, FM, and CM) used in this equation, and calculate RWL. For example, you can start from making an assumption that the person in the picture follows the anthropometry measures of a median US Army soldier, so their foot length is the mean from Table 1.3 in Topic 3 Part II's slides. Then, you can estimate the actual value of H, V, D. (a) (b) Figure 1 NIOSH approach to lifting task evaluation. (a) H is the distance of load from mid- point, V is the height of hands above floor, D is the distance through which load is lifted; (b) Angle of asymmetry of lift.