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Homework Help: Engineering questions

  1. Mar 3, 2010 #1
    1. The problem statement, all variables and given/known data

    I am having trouble completing these questions, help would be much appreciated.



    2. Relevant equations

    3. The attempt at a solution

    Attached Files:

  2. jcsd
  3. Mar 3, 2010 #2
    What have you tried?
  4. Mar 3, 2010 #3


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    Science Advisor
    Homework Helper

    Welcome to PF!

    Hi Lukas! Welcome to PF! :wink:

    Show us what you've tried, and where you're stuck, and then we'll know how to help! :smile:
  5. Mar 6, 2010 #4
    I have attached my partial solution to the two pulleys question. I think I have managed to work out the natural frequency, however I dont know what to do more as there are different spring stiffnesses and the pulleys have different radii.

    Attached Files:

  6. Mar 6, 2010 #5


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    Hi Lukas! :smile:

    Sorry, but this is too difficult to read.

    Can you please type out your work in future?

    (btw, there's no torsion in the pulley question)
  7. Mar 7, 2010 #6
    Here is my answer to the 2 pulleys question in word.

    Attached Files:

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