Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: SHM Kinematics

  1. Jan 4, 2006 #1

    G01

    User Avatar
    Homework Helper
    Gold Member

    Hi there I'm having a little trouble doing problems with SHM kinematics. I think its because I have yet to find a good method of solving them. I'll post one and show what I can do. Them I hope somone can help me find a good method to solving it.


    A 1 kg block oscillates on a spring with k= 20 N/m. At t= 0s the block is 20cm to the right of equilibrium. and moving to the left with v= -100cm/s.
    What is the Period?


    All I can figure out is that [tex] \phi_0 = \cos^{-1} (\frac{x_0}{A}) [/tex]

    And that [tex] T= 2\pi \sqrt{\frac{m}{k}} = 1.40s [/tex]

    Any hints at all? I can't seem to find any expression for the other variables that'll help, but maybe I'm forgetting some. Any help?
     
    Last edited: Jan 4, 2006
  2. jcsd
  3. Jan 4, 2006 #2

    G01

    User Avatar
    Homework Helper
    Gold Member

    WAIIIIIIIIIT A MINUTE I SOLVED THIS I forgot what i was solveing for sry!!!!!!
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook