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Re: Precession

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(I probably shouldn't be feeding the OCD monster, but...)

john <johnsefton288@gmail.com> writes:

>Odd
>"There's no way to tell, without apply a torque. "

>So. A spinning object has a resistance to
>having its precession changed from 0
>to some other value.
>This can be proven by applying a torque.
>Okay?

You need to look up the terms moment of inertia, torque, angular momentum
and angular velocity, and how these properties all relate to each other.

Specifically, angular momentum, like linear monentum, is a conserved 
quantity.  Meaning it cannot be created or destroyed, just transferred
from one object to another via torque.

Angular momentum has both a quantity and a direction, again like linear
momentum.  The direction is indicated by a vector in the direction of
the rotation axis.

Precession is essentially a constant change in angular momentum.  The 
magnitude remains the same but the vector direction constantly changes.

To change the direction (the angular momentum), you need a torque.  With
no torque, no precession.  With no torque, a spinning object will continue
spinning with the same magnitude and direction, like the earth. *
I keep trying to tell you this but you keep blowing me off.

Now crack a book and get reading!

(*) Yes the earth's rotation is slowing ever so slightly and it does 
precess just a little bit, but this is from torques from the gravitational
effects of the sun and the moon.

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Precession john <johnsefton288@gmail.com> - 2017-04-04 07:01 -0700
  Re: Precession Serg io <invalid@invalid.com> - 2017-04-04 10:07 -0500
    Re: Precession noTthaTguY <abu.kuanysh05@gmail.com> - 2017-04-04 08:45 -0700
  Re: Precession moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-04 15:27 +0000
  Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-04 10:49 -0500
    Re: Precession john <johnsefton288@gmail.com> - 2017-04-04 10:41 -0700
      Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-04 12:45 -0500
        Re: Precession Serg io <invalid@invalid.com> - 2017-04-04 14:32 -0500
        Re: Precession john <johnsefton288@gmail.com> - 2017-04-05 07:59 -0700
          Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-05 10:30 -0500
            Re: Precession john <johnsefton288@gmail.com> - 2017-04-05 10:10 -0700
              Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-05 12:23 -0500
                Re: Precession john <johnsefton288@gmail.com> - 2017-04-05 16:36 -0700
                Re: Precession john <johnsefton288@gmail.com> - 2017-04-06 07:02 -0700
                Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-06 09:19 -0500
                Re: Precession john <johnsefton288@gmail.com> - 2017-04-06 09:18 -0700
                Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-06 11:36 -0500
                Re: Precession "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-04-06 10:26 -0700
                Re: Precession john <johnsefton288@gmail.com> - 2017-04-06 11:17 -0700
                Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-06 13:45 -0500
                Re: Precession john <johnsefton288@gmail.com> - 2017-04-06 12:07 -0700
                Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-06 14:31 -0500
                Re: Precession pnalsing@gmail.com - 2017-04-06 15:06 -0700
                Re: Precession john <johnsefton288@gmail.com> - 2017-04-06 12:32 -0700
                Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-06 14:46 -0500
                Re: Precession benj <nobody@gmail.com> - 2017-04-06 20:23 -0400
                Re: Precession moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-07 03:51 +0000
                Re: Precession john <johnsefton288@gmail.com> - 2017-04-07 06:40 -0700
                Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-07 08:53 -0500
                Re: Precession john <johnsefton288@gmail.com> - 2017-04-07 07:38 -0700
                Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-07 09:58 -0500
                Re: Precession john <johnsefton288@gmail.com> - 2017-04-07 07:58 -0700
                Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-07 10:00 -0500
                Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-07 10:02 -0500
                Re: Precession moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-07 15:32 +0000
                Re: Precession moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-07 18:04 +0000
                Re: Precession benj <nobody@gmail.com> - 2017-04-06 20:22 -0400
                Re: Precession moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-04-07 03:50 +0000
                Re: Precession noTthaTguY <abu.kuanysh05@gmail.com> - 2017-04-07 19:41 -0700
                Re: Precession noTthaTguY <abu.kuanysh05@gmail.com> - 2017-04-07 20:21 -0700
  Re: Precession Edward Prochak <edprochak@gmail.com> - 2017-04-04 11:38 -0700
  Re: Precession "reber G=emc^2" <herbertglazier0@gmail.com> - 2017-04-06 10:25 -0700
  Re: Precession Odd Bodkin <bodkinodd@gmail.com> - 2017-04-07 14:32 -0500

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