A polystyrene rod of length 12 in. and diameter 0.5 in. is
Chapter 2, Problem 2.50(choose chapter or problem)
A polystyrene rod of length 12 in. and diameter 0.5 in. is subjectedto an 800-lb tensile load. Knowing that E 5 0.45 3 106 psi, determine(a) the elongation of the rod, (b) the normal stress in therod.
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