1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Finding Capacitance/Indutance

  1. Nov 13, 2009 #1
    1. The problem statement, all variables and given/known data

    Your professor tells you about pre-digital computer days when engineers used electric circuits to model mechanical systems. They could modify parameters of the circuit elements and see the effect on the circuit's behavior. Suppose a 5.0kg mass is connected to a spring with k = 1.54. This is then modeled by an LC circuit with 2.0H.

    What should C be in order for the LC circuit to have the same resonant frequency as the mass-spring system?

    I found the resonant frequency of the mass-spring system to be = 0.56.

    I have solved a formula to get this :

    C = 1/ (omega^2 * L)

    where omega = 0.56. No I am not sure how to find the inductance. Any help.
  2. jcsd
  3. Nov 13, 2009 #2


    User Avatar
    Homework Helper

    The inductance is stated in the problem: it's 2.0H. It's the capacitance that you need to find.
  4. Nov 13, 2009 #3
    What does the H stand for in 2.0H? Is that the unit for inductance? I am not sure.
  5. Nov 26, 2009 #4
    H stands for 'Henry'. It is the units of Inductance.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook