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   sci.physics.research      Current physics research. (Moderated)      17,516 messages   

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   Message 16,037 of 17,516   
   John Heath to All   
   Re: Conservation of momentum   
   28 Feb 18 21:32:20   
   
   From: heathjohn2@gmail.com   
      
   On Wednesday, February 28, 2018 at 3:33:30 AM UTC-5, Phillip Helbig (undress   
   to reply) wrote:   
   > In article <48f3e183-ba4b-4158-adfd-88aaf2a7a754@googlegroups.com>, John   
   > Heath  writes:   
   >   
   > >>> when it comes to spinning a box from   
   > >>> within it seems nature will look the other way if a bribe in the   
   > >>> currency of energy is payed. Apparently the universe does not feel a   
   > >>> need to spin counter clockwise if a box is spinning clockwise.   
   >   
   > > You are in a box in space and both yourself and the box are not rotating   
   > > relative to the stars that can be seem out the window. You now step on a   
   > > turn table spin yourself clock wise CW. This causes the box to turn   
   > > counter clock wise , CCW .   
   >   
   > If one causes the other, then there must be some link between the two.   
   >   
   > > You are turning CW and the box CCW. Angular   
   > > momentum has been conserved. I will ask you to put an elastic band   
   > > between your thumbs then allow your hands to spread out caused by your   
   > > CW spin. Lock the elastic band in the stretched position. Check mate as   
   > > you just bribed nature with the currency of energy , stretched elastic   
   > > band. As you were on a turn table when you did this the spinning of the   
   > > box was not effected.   
   >   
   > Why not?  Why is it affected in the first case and not in the second?   
   >   
   > > As long as you have a locked stretched elastic   
   > > band in your hand the total angular momentum of yourself and the box can   
   > > not be restored to zero without violating energy conservation laws.   
   > >   
   > > I have an open mind to a counter argument.   
   >   
   > See above.   
      
   Why in the first case but not the second. In the first case you   
   have to push against the box to get yourself spinning on the turn   
   table. This spins you CW and the box CCW. However in the second   
   case you are on the turn table so any action taken on the turn table   
   can not effect the spinning of the box.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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