Under which condition of the state of stress at a point in the two dimensions, the Mohr's circle will be reduced to a point ?
How much change in volume would a 100 mm side cube of steel will have when it is kept at a depth of 2 km in sea water? Assume specific gravity of sea water equal to 1.02, modulus of elasticity equal to 2.08 GPa and Poisson's ratio equal to 0.29.