1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    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!

Oscillation frequency

  1. Dec 8, 2007 #1
    1. The problem statement, all variables and given/known data
    A winch cable has a cross sectional area of 1.5 cm^2 and a length of 2.5 m. Young's modulus for the cable is 150 GN/m^2. A 950-kg engine block is hung from the end of the cable.
    (a) By what length does the cable stretch?
    (b) If we treat the cable as a piece of string, what is the oscillation frequency of the engine block at the end of the cable?

    2. Relevant equations

    3. The attempt at a solution
    For (a) I used Young's modulus and found that the cable stretches 0.104 cm.
    For (b) I don't know how to go about finding the frequency.
  2. jcsd
  3. Dec 8, 2007 #2
    Think of the cable as a spring and the engine as a mass on the end of a spring. When the cable stretches it will stretch past its equilibrium point and then compress back up, then stretch back down...etc. Given that the cable is behaving like a spring, how can you relate Young's modulus to the spring constant (usually k)?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Oscillation frequency