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RE: Purpose?

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My original training was in classical physics which defined a slug as the
unit of mass and the pound (lb) as the unit of force for the British system
of units.  It wasn't until I changed to the realm of engineering that I saw
the use of lb-mass, which I found to be odd.

Thanks again for the clarification!

Scott C. Bernard, E.I.T.
Structural Engineer/Universal Erectors
210 Neptune Rd.
Auburndale, FL 33823
Phone: 800-282-9583
Fax: 863-967-1082
Cell Phone: 863-559-8493
E-mail: scott(--nospam--at)
E-mail 2: ubs_engineer(--nospam--at)
World Wide Web:

-----Original Message-----
From: Mark Gilligan [mailto:MarkKGilligan(--nospam--at)]
Sent: Wednesday, April 04, 2001 11:24 AM
To: INTERNET:seaint(--nospam--at)
Subject: RE: Purpose?

A pound can be a unit of mass or a unit of force depending on the system
you decide to use.  Engineers typically use a pound as a unit of force.

Mark Gilligan

>Can someone explain the difference between a slug and a lb-mass?  I was
always under the impression that a slug was the British unit for mass and
now I see lb-mass used.