1.The moist unit weights and degrees of saturation of a soil are given: moist unit weight (1) = 16.62 kN/m^3, degree of saturation (1) = 50%; moist unit weight (2) = 17.71 kN/m^3, degree of saturation (2) = 75%. Determine a) e (void ratio) and b) Gs (specific gravity)
2.the force-couple system at A is to be replaced by a single equivalent force acting at a point B on the vertical edge of the triangular plane. determine the distance d between A and B
3.the device shown is a part of an automobile seat-back-release mechanism. The part is subjected to the 4 N force exerted by a hidden torsional spring. Determine the y-intercept of the line of action of the single equivalent force.
4.The volume and the average density of an irregularly shaped body are to be determined by using a spring scale. The body weighs 7200 N in air and 4790N in water. Determine the volume and density of the body. State your assumptions.