A cylindrical bar of radius 15 mm and length 100 mm is held at both ends. If at 30°C no axial force exists in the bar, determine the stress and strains in the bar when the temperature rises to 100°C. Also determine the axial force and deformation of the diameter due to temperature rise. Let E = 120 GPa and co-efficient of linear thermal expansion = 0.0000168 per°C.