14. Carbon steel wire of length l = 1,5 m and a diameter d = 2,1 mm suspended load mass m = 110 kg. Taking the steel Young's modulus E = 216 GPa and the proportional limit σn = 330 MPa, determine: 1) what proportion of the original length of the elongation of the wire at the same shipment; 2) the applied voltage exceeds the proportional limit or not.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)