How Stokes law helps a man coming down with the help of parachute?

In figure a 100kg uniform log hangs by two steel wires A and B, both the area of cross-section $5m{m}^2$. Initially, wire A was 2.50m long and 2.00mm shorter than wire B. The log is now horizontal. The Young's modulus of steel is $2\times {10}^{11}\frac{N}{m^2}.$
($d_A$ and $d_B$ are the distances measured from the centre of log).



The extension produced in wire A is: