natural frequencies

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From: Sally Seebode (sseebode@earthlink.net)
Date: Thu Feb 15 2001 - 08:59:38 PST 

Message-ID: <000501c09770$aeeef0c0$a603060a@Seebode.smuhsd.k12.ca.us>
From: "Sally Seebode" <sseebode@earthlink.net>
Subject: natural frequencies
Date: Thu, 15 Feb 2001 08:59:38 -0800

My physics class is studying waves and we just looked at resonance and
watched the Tacoma Narrows bridge collapse. Students asked how we determine
the natural frequency of large objects (like bridges and buildings) to make
sure this doesn't happen again. I don't know the answer. help?

sally

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