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




Foot & pound & combinations.
Fouad Ajami

From: clement@hal-pc.org
To: Phys-L@Phys-L.org
Date: Thu, 26 Jul 2012 17:31:05 -0500
Subject: Re: [Phys-L] form of Newtons 2nd law

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