A compound cylinder is formed by shrinking one outer steel cylinder over bronze cylinder. I he final dimensions are internal diameter 100 mm, external diameter 200 mm and junction diameter 160 mm, and the shrinkage pressure at the common surface is 12 N/mm ^2
, Calculate the necessary difference in radii of two cylinders at the common surface. For steel, E n =200GPa,v 1=0.3E i​=100GPa 4v 0 =0.32

For bronze. What is the maximum temperature through which the outer cylinder should be heated before it can be slipped on? For steel α=11×10^−7 / ∘C