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Simple Harmonic Motion oscillations

  1. Dec 5, 2005 #1
    A 0.49 kg mass attached to a spring (k = 19.8 N m-1) is performing SHM on a smooth horizontal surface. Calculate the periodic time of these oscillations, in s.

    what equation links with T=2pi/w to give T or how do i use a=-ky/m.
    thanks in advance
  2. jcsd
  3. Dec 5, 2005 #2
    F=ma= m*d^2y/dx^2 = -m*w^2*y = -ky
    i get T=0.988
  4. Dec 5, 2005 #3
    The linking equation you're looking for is:

    [tex]k = m\omega^2[/tex]
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