For the given failure surface, determine whether the slope detailed in the figure given below is stable in short term. The unit weight for both soils is $18k\frac{N}{m^3}.$ The characteristic undrained strength $(c_u)$ is $15$kPa for soil $1$ and $40$kPa for soil $2.$

Determine tension crack depth by Rankine Theory.

Scale$)$ is $15$ kPa for soil $1$ and $40$ kPa for soil $2.$

Determine tension crack depth by Rankine Theory.