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Martin H. Eastburn Martin H. Eastburn is offline
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Default RPM of variable speed DC Motors

I forgot the obscure and not approved terms like kgf, lfg, gf, ozf...ugh.
I was a newton type.
Martin
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Life; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
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JohnB wrote:
That is to distinguish it as pound (force) as opposed to pound (mass)

lbf .... lbm

Here is a link that discusses the relationship with Newton's second law.

http://engr.nmsu.edu/~etti/winter98/...mann/slug.html



Martin H. Eastburn wrote:
Ya added an f in lbf ? never heard of that one :-)

Martin
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Life; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/


Don Foreman wrote:
On Sun, 30 Sep 2007 09:15:41 -0700, "William Noble"
wrote:

maybe it will help to understand that horsepower is a measure of
power, not force - torque is "force", RPM is "speed", power is the
product, so to speak. one horsepower is 3300 ft-lbs per minute -
e.g. a one horsepower motor can lift a 3300 pound weight (not mass)
one foot in one minute, or it can lift a 1 pound weight about 2/3 of
a mile in the same time.

Ya dropped a zero. 1 HP = 33,000 ft-lbf/min.


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