[DMCForum] Re: Last Post For Martin

["twinenginedmc12" <twinenginedmc12@xxxxxxxxxxxxxxxxx>]

Hey Martin.

I'm usually right there smirkin' and lurkin' on the internet when 
Bill says something stupid and you jump on him for it, so I can't in 
good conscience let you bash him when he's actually right for a 
change.  

Torque is the rotational analog of force.  Bill is correct in 
comparing torque to force, so cut the guy a break.  The units don't 
appear to match because the force in rotation is at right angles to 
the axis at a distance from the axis.  That distance from the axis is 
where the meter in Nm comes from.  You probably already knew this but 
forgot it.

For every equation of power in a straight line, there is an 
equivalent for power in rotation, and they all differ by that "meter" 
that shows up in torque.

As an aside, I had a funny experience in a physics class, in which we 
were being introduced to torque.  The professor said that in English 
units, torque is expressed in poundfeet, and in metric, it's 
expressed in Newtonmeters, and since a Newton times a meter is a 
Joule, (not 9.8 Newtons times a meter, like in one of your prior 
posts, one of the few that was wrong) , one could also express torque 
in Joules.  I said "No!" really loud and embarrassed myself and the 
professor quite thoroughly.  It was funny, even though most of the 
class didn't get it.

But usually, about nine times out of ten, you're right, and Bill's 
wrong.  I hope you two never stop arguing.  It's funny.

Rick


--- In DMCForum@xxxxxxxxxxxxxxx, Martin Gutkowski <webmaster@xxxx> 
wrote:
> I just remembered that F=mA Force = Mass x Accelleration.
> 
> Therefore Force is measured in kgm/s^2, taking us to SI units.
> 
> By your argument the units of Torque (NewtonMetres) should be the 
same 
> as force, which clearly they aren't. Going too fast for you here?
> 
> >All the key components are in the classic HP definition: force,
> >distance, and time. Look very closely and maybe you'll finally see 
them:
> >
> >HP = Torque x RPMs / 5252
> >
> >It's all there: force (torque), distance (revolutions), and time
> >(minutes).
> >
> And distance with respect to time is also called....? I'll give you 
a 
> clue: "Miles PER HOUR?" What's that the unit of. Oh look, it's a 
measure 
> of SPEED isn't it? So is radians/sec.
> 
> Oh and once again TORQUE IS NOT THE SAME AS FORCE - see top of this 
e-mail.
> 
> Please answer me one question: Did you ever do physics at school? 
Did 
> you learn about formulae? Did you do distance, speed and time 
graphs in 
> basic mathematics? I did it at around age 11.
> 
> Martin
> 
> 
> 
> >  
> >

---

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