The concrete dam shown in Figure P4.17 weighs 23.6 and rests on a solid foundation. Determine the minimum coefficient of friction between the dam and the foundation required to keep the dam from...

The concrete dam shown in Figure P4.17 weighs 23.6

and rests on a solid foundation. Determine the minimum coefficient of friction between the dam and the foundation required to keep the dam from sliding. Base your analysis on a unit length of the dam.