A wire of diameter 1 mm carries a load of 100 N. The stress in the wire is:

  1. 2.55 10^8 Pa
  2. 5.09 10^8 Pa
  3. 3.18 10^7 Pa
  4. 1.27 10^8 Pa
Answer

D) 1.27 10^8 Pa

A = pi r^2 = pi(5 10^-4)^2 = 7.85 10^-7 m^2; sigma = F/A = 1.27 10^8 Pa. SLO P-11-B-24 · Application

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