A machine uses a pair of concentric helical compression springs to support an essentially static load of 3.0 kN. Both springs are made of steel and have the same length when loaded and when unloaded. The outer spring had D=45 mm, d=8 mm, N=5; the inner spring D=25 mm, d=5 mm, and N=10. Calculate the deflection and also the maximum stress in each spring.