A compound steel assembly comprises a disc with 510 mm inner diameter and 710 mm outer diameter shrunk on to a solid hub. If a diametral interference of 0.05 mm must be maintained between the disc and hub at a speed of 10,000 RPM, determine the pressure due to shrinkage in the common diameter. Assume the following properties for the steel: = 7835 kg/m3, = 0.3 and E = 207 GPa