A copper bar AB of length 25 in. is placed in position at roomtemperature with a gap of 0.008 in. between end A and a rigidrestraint . Calculate the axial compressive stress inthe bar if the temperature rises 50 F. (For copper,use α= 10^-5 / F and E = 16*10^6 psi ).
Determine the maximum allowable temperature rise if the allowablecompressive stress in the copper is σ(allowable) = 19,500 psi.