12) (20 Points) A steel specimen of a gage-length L0=200mm and a diameter of d0=20mm is subjected to a tensile stress. The normal force of 95,000N elongates the gage length by 0.302 mm. Shear modulus of elasticity is given by Gstel=75GPa, and the yield shear stress is given by y=345MPa. a) ( 4 points) Calculate tensile stress supplied by normal force tensile stress to the corresponding elongation elastic or plastic _ 1 ? Hint: Compar c) (5 points) Determield stress. d) (4 points) Determine the Young's modulus of elasticity. e) (4 points) Determine the Poission's ratio. f) ( 4 points) Determine the lateral strain Elnerat. ? Hint: Compare (1)L0=200mm=A0Pt=L0=314,16mm295,000N=301.9d0=20mmA=r2=(10)2=314.16mm2 FN=95KN b) elastic the tensile stress is lawer than t=.302mm the vield stress G=75GPa E=E6 t=200mm.302mm=.00151mm/mm y=345MPa E=.00151301.97=1999,90.13 unin ? - 1 tensileE=301.97MPa=199980.13 long=lbt=r e) bog=200mm.302 (3)