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Old July 2nd 06, 02:14 PM posted to rec.radio.amateur.antenna
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Default Log Peridic 50m - 1300m


Chris W wrote:
gravity wrote:


please read the NIST publications which define the Avoirdupois pound in
terms of kilograms. this is not debateable since NIST is *the* authority in
the US.


The NIST isn't the authority on the laws of physics. One of the most
basic of which is F=MA, if you use pounds for mass in that formula you
get the wrong answer. Nothing that NIST says will change that.

200 lbs = 6.25 slugs * 32 ft/sec^2. Using pounds, the formula won't
work any other way.


Bull****.

Here are a couple of other ways that work just fine with FFU:

200 lb * 32.2 ft/s² = 6440 pdl

0.52 slinch * 386 in/s² = 200 lbf

Be sure to distinguish pounds force (lbf) from pounds (lb), and units
of measure should remain unchanged in the plural, without adding any
language-specific "s" or whatever.

Gene Nygaard

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