A wire of length 2.0 m and area 2.0 10^-7 m^2 gives a load–extension gradient of 2.0 10^4 N/m. Its Young modulus is:

  1. 2.0 10^-3 Pa
  2. 8.0 10^11 Pa
  3. 1.0 10^11 Pa
  4. 2.0 10^11 Pa
Answer

D) 2.0 10^11 Pa

Y = klA = 2.0 10^4 2.02.0 10^-7 = 2.0 10^11 Pa. SLO P-11-B-25 · Understanding

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