$14\mathrm{.}6$ In Figure P$14\mathrm{.}6,$ let $H_1=2\mathrm{.}5m,H_2=4\mathrm{.}5m,{}_1=16\mathrm{.}8k\frac{N}{m^3},q=0,{}_1^{\text{'}}=34,c_1^{\text{'}}=0,{}_2=22k\frac{N}{m^3},{}_2^{\text{'}}=25,$ and $c_2^{\text{'}}=10k\frac{N}{m^2}.($a$)$ Determine the Rankine active force per unit length of he wall.

$($b$)$Then Repeat the problem for the Rakine passive case