(1) A tensile stress is to be applied along the long axis of a cylindrical brass rod that has a diameter of 10 mm. Determine the magnitude of the load required to produce a 2.5 x 10-3 mm change in diameter if the deformation is entirely elastic

Question 3 (a) One end of a wire of length L and diameter d is attached to a high ceiling. The wire hangs vertically under its own weight. Under these conditions: (i) Calculate the highest stress in the wire (ii) Calculate the elongation of the wire (b) If the wire is now laying horizontally on a smooth surface and attached to a wall at one end, what force must be applied to the other end of the wire for the elongation to be the same as in part (a). Assume the following properties for the wire: E=29 x 10° psi, d=0.50 in, L=60 ft and specific weight of y=0.284 1b/in³.

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