Lets see;
A newton (N) is the force required to accelerate a 1 kg mass 1 m/s^2.  1
lb = 4.448N, 1kg = 2.205 lbs
For uniform circular motion, F = ma = m * v^2/r
r = .9685  in = .9685 * 2.54 = 2.46cm

circumference = 6.085 in * 2.54 = 15.46 cm /100 = 0.1546m
RPM = 10000 = 166.7 revolutions per second
Velocity = 167.7 * 15.46 cm = 2577 cm/s / 100 cm/m = 25.77m/s
Weight = .3233 lbs = .3233 / 2.205 = .1466 kg

F (newtons)   = m x V^2/r
                     = (.1466kg) * (25.77)^2 m/s^2 / (0.1546m)

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This should be
                       = .1466kg) * (25.77)^2 m/s^2 / *0.0246)
which makes my number correct.
He is dividing by the circumference not the radius.

Blake

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You are confusing the heck out of me by converting to cm Blake.
Hard for to keep the position of the decimal point straight.

On the other hand most of us agree on:
= .1466kg) * (25.77)^2 m/s^2 / *0.0246)

Which is 154 Newtons which is according to:
http://www.onlineconversion.com/force.htm
is 36.6 pounds force.


Paul Lamar ...No rotor no motor.

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