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Re: Slug v. lb-mass

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----- Original Message -----
From: "Mike Valley" <mtv(--nospam--at)skilling.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Wednesday, April 04, 2001 11:03 AM
Subject: RE: Slug v. lb-mass


> Roger:
>
> Your answer is only partially correct.  The relationship of interest
> is W=mg.  Using U.S. Customary units, g = 32.174... ft/sec/sec, W is
> in pounds, and m is in slugs.  So yes,
>
>    "1 slug = (approx.) weight in lbs/32.2"
>
> However, one pound (force) corresponds directly to one lb-mass.  [In
> the same (wrong) way that some countries use kilograms force = force
> exerted on one kilogram of mass at the earth's surface.]  Therefore,
>
> 1 slug = 32.174... lb-mass
>
> -Mike
>
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> Michael Valley, P.E., S.E.                   E-mail: mtv(--nospam--at)skilling.com
> Skilling Ward Magnusson Barkshire Inc.              Tel:(206)292-1200
> 1301 Fifth Ave, #3200,  Seattle  WA 98101-2699      Fax:        -1201
>

As the listserves generally lurking mechanical engineer......IMO Mike is
right on target.

We ME's use these sorts of rather od units for our dynamics & thermo work.
Chris where are you?

Bob Kazanjy, PE
UC-Irvine
Dept of Civil Engineering