1. Not finding help here? Sign up for a free 30min 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!

Damping constant

  1. Apr 21, 2012 #1
    1. The problem statement, all variables and given/known data
    i had an investigation
    use your data to find the value of k, compare this theoretical number with your data.
    - plot a suitable graph so that you can determine k.

    2. Relevant equations
    A= A_0e^(-kn)
    A_0 initial amplitude = 1

    3. The attempt at a solution
    hey im new to the forum and yeh here my question. well i was given the homework getting a set of readings of a damped pendulum bob. i got the readings took an average and then i managed to plot a graph of those readings. i did so and i managed to get a graph which decreases exponentially. now i want to compare my therotical damping constant with my data and i have come stuck.
    the y axis is amplitude, "A" and the x axis "n" turns

    my k value theoretically is 0.22456, but i dont know how to find it from my graph.
    should i change my y axis to ln(A_0/A) thats how one of my friend did it but i dont get it.

    sorry for poor english, its my second language, first time using forum. and i tried to follow the rules... :/
     
  2. jcsd
  3. Apr 21, 2012 #2
    anxiously waiting
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Damping constant
  1. Damping constant (Replies: 1)

  2. Damping constant. (Replies: 5)

Loading...