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!

Amplitude & Time constant

  1. Feb 7, 2010 #1
    1. The problem statement, all variables and given/known data

    A gust of wind hits a flagpole and starts it oscillating. After 10 s, the amplitude of its motion has decreased to 25% of its initial value.

    What is the value of the time constant?

    2. Relevant equations

    xmax(t) = Ae[tex]-t/\tau[/tex]

    3. The attempt at a solution

    I know that the answer is 7.2s, but how do I find it?

    How do I manipulate the above equation?
  2. jcsd
  3. Feb 8, 2010 #2
    Use the equation you gave at with t=0 and also with t=10
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Amplitude & Time constant
  1. Time constant (Replies: 1)