On Mar 22 , at 2:47 PM, James R. Frysinger wrote:
So if I say, "The motor is running at
8600/s" what do I mean? Better to say, "The motor is running at a
shaft
rotation rate of 8600/s" or "The motor is running at an angular
velocity
of 8600 rad/s", whichever is the case. Of course those differ by a
factor of 2 pi.
I agree with this (above) and would further argue that, if we indeed
do insist on naming the measured rate by proper names like "rotation
rate", "angular velocity" etc. then it should be possible to see that
rotations are not units and the, correspondingly, neither are radians.
(Since degrees per second are also used for angular velocity, one
would need different names for these two things. I'd suggest "degree
velocity" and "radian velocity".)
Abandoning the practice (built firmly into SI) of treating the radian
as a unit would, in my opinion, be progress.
Regards,
Bill Hooper
Fernandina Beach, Florida, USA
PS And I remembered to change the subject on this as I go off on a
tangent.
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Make It Simple; Make It Metric!
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