A steel beam of length 5 m is heated to a temperature difference of 50 degrees. calculate (a) stress developed in the beam when both ends are fixed and (b) change in length when one end is free to...

Extracted text: A steel beam of length 5 m is heated to a temperature difference of 50 degrees. calculate (a) stress developed in the beam when both ends are fixed and (b) change in length when one end is free to expand (a, =11.7x10 /°C, E = 210 MPa). (A) (a)o=112.85 MPa (b) 8 = 0.002925 m (В) (а)o — 225.7 MPа (b) 8-0.02925 m (C) (a)o =112.85 MPa (b) 8 = 2.925 m (D) (a)o =112.85 MPa (b) d = 0.002925 mm ||