1.A cylindrical soil, 75 mm in diameter and 150 mm long, is radially compressed. The length increases to 153 mm and the radius decreases to 37.2 mm.
Calculate:
a) the axial and radial strains
b) the volumetric strains
2.A spherical drop of water has r = .1mm . If the surface tension of water is 72 dynes/cm, calculate the pressure difference across the interface. Express the answer in dynes/cm^2. (Tip: theta = 0 for perfect fluid spheres)