Question 1 Refer to the 15mhigh wall shown in the figure. Assume that the retaining wall shown in fig can yield sufficiently to develop an active state (i.e., before the tensile crack occurs). (a) Determine the Rankine active force per unit length of the wall. (b) Determine the location of the resultant line of action. Assume, T\". = 10 kNlm3 Groundwater 3 to table ___________Y_______ l in ' 5 m 4 m