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B Young's Modulus and Stiffness

  1. Jun 6, 2017 #1
    Just want clarification on two equations.

    So basically, I want to calculate the time period T of the complete oscillation of a cantilever. I use this equation.
    hgNhdyiGUWA0f0WGolN4oq1Bx-NZ1iowri5CpO8veyOtjCeHwE5adN_Yd_f4nRQuMtwgetzwGduNQIVJDG8JPhi9RU_xNd3j.png
    Is E equal to young's modulus or is it equal to stiffness? If it is equal to stiffness, can I use this equation to calculate the stiffness?
    k = upload_2017-6-6_17-47-32.png

    Thank you in advance. :)
     
  2. jcsd
  3. Jun 6, 2017 #2
    What is your definition of the parameter that you call "stiffness?"
     
  4. Jun 6, 2017 #3
    In my case, I think it is the resistance of deflection. However, when I search online that is also the definition for Young Modulus. Yet there's these two different equations which is confusing.
     
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