I proposed a related thought experiment a few years ago on vortex, but its realization would not be as simple as your thought experiment.
Imagine an apple hanging from spring. The spring is mounted from the ceiling of a train. The train runs on a track which follows the path of a great circle around the Earth. As the train speeds up I expect the the spring will contract, i.e. the apple will become lighter. harry > >From: David Jonsson <[email protected]> >To: [email protected] >Sent: Sun, December 12, 2010 5:31:18 PM >Subject: Re: [Vo]:A rotating molecule on a rotating planet appears lighter >than >a non rotating molecule > >I have read now. > > >Why can't they clearly write what it is all about? It seems like mystic or >allegoric activity. > > >Have they just found out the effect or can they really explain what it is all >about? > > >The mechanics behind my effect is really simple. Horizontal movement at the >escape velocity causes a stable trajectory where gravity forces are cancelled >by >centrifugal forces. > > >If they are supposed to lift a flying wheel according to my idea with most of >its mass at its rim with a diameter of 0.4 meters they have to rotate the >wheel >at 35.2 km/s = 28 000 revolutions per seconds = 1 680 000 rpm and that is >technically impossible. I think the speed record is around 500 m/s for >extremely >well balanced cylindrical gas centrifues. Even a fingerprint will give the >cylinder an imbalance that makes it impossible to use at full speed. > > >I calculated in the following way. The escape velocity on Earth is 11.2 km/s. >Since a rotating motion is only partially horizontal in motion the speed has >to >be multiplied with pi to get an average speed at the escape velocity. The rest >is geometry. > > >Laithwaite mentions speeds of 5-6000 rpm which is 0.4% of a full lift so maybe >the effect is noticeable. > > >David > > >On Sat, Dec 11, 2010 at 6:04 PM, Terry Blanton <[email protected]> wrote: > >This is beginning to sound like that great Heretic Eric Laithwaite. >>Appropriately, here is his Christmas Lecture: >> >>http://www.gyroscopes.org/1974lecture.asp >> >>On propulsion: >> >>http://www.gyroscopes.org/propulsion.asp >> >>Laithwaite's patent: >> >>http://www.rexresearch.com/laithwat/laithw1.htm >> >>issued posthumously. >> >>T >> >> >
