A cylindrical rod of copper (E = 110 GPa) having a yield strength of 442 MPa is to subjected to a load of 5,941 N.  If the length of the rod is 137 mm, what must be the diameter to allow an elongation of 0.16 mm?  Assume elastic loading.  Give your answer for diameter in mm with 2 decimal precision.  Use 3.14 for pi.

A wine of length L = 4 ft and diameter d = 0.125 in. is stretched by tensile forces P = 600 lb. The wire is made of a copper alloy having a stress-strain relationship that may be described mathematically by =18,0001+30000.03(=ksi) in which is nondimensional and has units of kips per square inch (ksi). (a) Construct a stress-strain diagram for the material. (bj Determine the elongation, of the wire due to the Forces P. (c) IF the forces are removed, what is the permanent set of the bar? (d) If the forces are applied again, what is the proportional limit?

You are given a square rod of 6061-T6 aluminum (cross-section = 4mm X 4mm, length = 2.3m).  The material has a Young’s modulus of 72 GPa.  If a tensile load of 3 kN is applied parallel to the 2.3m dimension, what is the change in length of the rod?

A steel wire is 10m long supports a tensile load of 2000N. What is the diameter if the stress is 140 MPa & the total elongation is 5mm.E=200 GPa.