Two boundary conditions determine two constants, to get 0, - /2 (P. + P) + 19-01 [0-9] {P. (2(1-2v)r/b+(1+v))-P.(2(1-2v)r/a+(1+v))} P-P 21-(a/b) Pa-Ph 2[1-(a/b)] 2E(1-(a/b)) Method 2: displacement method, ustrains in ustress in u equilibrium in u Solve. May need o, = 2GE, +A(e, +28) J2GE +2(e, + 2)