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Homework Help: Period and angular frequency problem.

  1. Apr 21, 2013 #1
    1. The problem statement, all variables and given/known data

    If period of simple harmonic graph of electric current goes down by 20%, how will change the angular frequency?
    Will it increase by 25π%? 25%? 50%?...

    2. Relevant equations

    T = 2π/ω

    3. The attempt at a solution

    So by going down by 20%, so 100%-20%, I have 80%*T=2π/ω. 0.8*T=2π/ω. 8T/10=2π/ω. 4T/5=2π/ω. ω=2π/T *(5/4) = 2π/T * 1.25
    So by this, angular frequency increases by 25%?
  2. jcsd
  3. Apr 21, 2013 #2


    User Avatar

    Staff: Mentor

    Yes, it look like you got there in the end :smile:
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