A cubical solid aluminium (bulk modulus =-VdP/dV = 70 GPa) block has an edge length of 1m

Question

A cubical solid aluminium (bulk modulus =-V \(\frac{dp}{dV}\)= 70 GPa) block has an edge length of 1 m on the surface of the earth. It is kept on the floor of a 5 km deep ocean. Taking the average density of water and the acceleration due to gravity to be 10³ kg m⁻³ and 10 ms⁻² , respectively, the change in the edge length of the block in mm is _____.

Answer 1

da = Δa = \(\frac{5}{21}\) x 10^-2 m 

= 2.38 mm