c) A steel ring of radius 444mm is to be slipped on to a brass wheel of radius 450mm. To what maximum temperature
should the steel ring be heated to enable fitting? What will be the stresses in the materials on cooling if the cross-
sectional dimension of the steel ring is 20mm x 5mm and that of the brass wheel is 20mm x 40mm? (E for steel is
200GPa, E for brass is 95GPa and coefficient of expansion for steel is 12 x 10-6/°C (12 Marks)
&
10cm=16m
