PSN-L Email List Message

Subject: Re: boom angle of horiz seis
From: Jack Sandgathe jsandgat@.......
Date: Tue, 15 Feb 2000 16:57:13 -0800

Sean Thomas:

        For me to offer a correction to you sir, is like trying to correst
Isaac Newton or someone, but here goes.  I think you meant to refer to the
hinges being vertical rather than the boom being horizontal.

        respectfully, Jack Sandgathe

At 01:59 PM 2/15/00 -0600, you wrote:
>........IF the boom is exactly horizontal, it will experience NO
gravitational restoring
>force, so it will swing back and forth aimlessly. If the mass end is
lowered slightly, it will >swing in a shallow curve in the gravitational
field, with the minimum being at the bottom or center >of the swing. 


Public Seismic Network Mailing List (PSN-L)

[ Top ] [ Back ] [ Home Page ]

Larry Cochrane <cochrane@..............>