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A practical method to turn the planet Earth. Is there a physics level flaw in this proposed method?

 
 
Achbart
 
Reply Sat 5 Mar, 2016 10:29 am
Studying the Earth-Moon tidal force it occured that energy from the system (moon) could be used to apply an external force (non-Earth reference frame) to turn the Earth.

By affixing a horizontal lever (eg. 100m long) onto the ocean floor or an island mass, and attaching a large plate, parachute or an array of them to the lever's end, to capture (resist) the ocean tidal movement as the moon passes above each day. Collectively the force applied by the moon dragging the seawater, will slowly apply the force to the rigid lever base (the Earth itself). The ocean tide can provide the enormous energy necessary, free and scalable.

The simple design requirement provides a non-maintained, energy free apparatus which will continue to apply angular momentum at the base of the lever, drawn from the moon-earth gravity. Newton laws are intact.
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Type: Question • Score: 1 • Views: 1,695 • Replies: 6
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fresco
 
  1  
Reply Sat 5 Mar, 2016 01:10 pm
@Achbart,
As I understand it,the tidal bulge due to the moon's gravity is responsible for slowing the earth's rotation. I suggest you look into that.
dalehileman
 
  1  
Reply Sat 5 Mar, 2016 02:13 pm
@fresco,
Yea Fres, that's what I thought too
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nacredambition
 
  1  
Reply Sat 5 Mar, 2016 09:33 pm
@Achbart,
https://en.wikipedia.org/wiki/Tidal_power
maxdancona
 
  1  
Reply Sat 5 Mar, 2016 09:48 pm
@nacredambition,
As Nacredambition's link points out, we are already doing this.

There is no scientific problem in doing this. The energy is coming from the Earth-Moon system, the Earth's rotation is already being slowed by the tides... we would just be taking energy that is already being transferred. There would be no impact on the Earth-Moon system.
Achbart
 
  1  
Reply Tue 8 Mar, 2016 02:17 pm
@maxdancona,
Thanks very much for all replies genuinely, but you all missed the point.

The application described is not designed to slow Earth's rotation.
Instead it is converting linear momentum (Earth-moon tide) to angular momentum (through a lever, onto the sea floor thus the planet) by using force from external (moon) source to alter Earth within local reference frame (ex moon).
The result is to turn the Earth slowly over a long period, a few hours each day, pole over pole, which put another way the equator is shifted, say England might be for a time be on Earths equator.

The reason this is considered the only way an individual might do this, is because it is relatively simple to implement, energy free/self powered and requires no maintenance. Set and forget.
So for example you could affix a 4mile x 2mile sail to an A-Frame on the ocean floor. The sail will drag the lever one-way with the tide each day. The lever perhaps 1/4mile long is attached to the sail at one end, and its base to a rocky undercrop or other rigid point, where converted angular momentum adds rotational energy each day to the lever base so turning the Earth a tiny bit each day, pole over pole.

maxdancona
 
  1  
Reply Tue 8 Mar, 2016 03:18 pm
@Achbart,
I think now you are violating a physics principle: namely the law of conservation of angular momentum. You are imply that you will be adding an additional rotation to the Earth, right?

How would this angular momentum be conserved?
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