Posted by **heba** on Friday, June 18, 2010 at 4:33am.

A certain spring elongates 9 mm when it is suspended vertically and a block of mass M is hung on it. The natural frequency of this mass-spring system is:

a)0.014

b)5.3Hz

c)31.8Hz

d)181.7Hz

e)need to know M

please explain the answer....and hope to answer soon.... thanks in advance

- physics -
**hoho**, Tuesday, May 31, 2011 at 1:38pm
no idea

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