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A cylindrical rod of copper (E = 110 GPa, 16 x 106 psi) having a yield strength of 240 MPa (35,000 psi) is to be subjected to a load of

6650 N (1495 lbp). If the length of the rod is 370 mm (14.57 in.), what must be the diameter to allow an elongation of 0.52 mm(0.02047 in.)?

Fig: 1