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Re: [Phys-L] form of Newtons 2nd law



Yes, I know. I am being facetious. But I seem to remember that the
US/British engineering system is consistent and would not require an extra
constant. After looking it up, it seems that right now there has been a
flurry of conversions to SI for common usage in many countries. So the US
is being even more isolated unit wise. After 2015 we may be the only
country to not have SI used in common measurements. Of course many
countries still tolerate non SI in some common usage so England still uses
stones for weight. And new products are usually metric dimensions. So CDs
and cassettes are all in metric dimensions. But don't they train engineers
to use SI in most foreign countries? Are they still training engineers in
Britain using the Imperial system?

John M. Clement
Houston, TX



Foot & pound & combinations.
Fouad Ajami


What non SI system do engineers use that would need this?
It seems that he
wants to use a mixed system. Are we talking about
furlongs, links, chains,
stones...

The problem here is that engineers tend to be sometimes
very rigid in their
thinking. I had a dad who told me we were teaching torque
wrong. It is
true that engineers have their own terminology, but that
hardly makes ours
wrong. Are the French wrong because they speak French
rather than English?

John M. Clement
Houston, TX

-----Original Message-----
From: phys-l-bounces@phys-l.org
[mailto:phys-l-bounces@phys-l.org] On Behalf Of Larry Smith
Sent: Thursday, July 26, 2012 4:12 PM
To: Phys-L@Phys-L.org
Subject: [Phys-L] form of Newtons 2nd law

My engineering colleague says I should teach N2 as F = kma
where k can make it work in non-SI-unit systems. How do you
respond to such requests?

Thanks,
Larry


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_______________________________________________
Forum for Physics Educators
Phys-l@phys-l.org
http://www.phys-l.org/mailman/listinfo/phys-l

_______________________________________________
Forum for Physics Educators
Phys-l@phys-l.org
http://www.phys-l.org/mailman/listinfo/phys-l