On 01/11/2011 04:43 PM, David Jonsson wrote: > Yes, under "effects of centripetal acceleration" which is by the way > an erroneous title since it should be centrifugal acceleration.
Don't think so. In Newtonian terms, the acceleration's centripetal, caused by the centripetal force, which is provided by gravity. The "fictitious" centrifugal force is the outward-pointing acceleration of a uniformly moving non-rotating object (times its mass) which is observed from a rotating frame. However, in the rotating frame, the acceleration you're concerned with -- and the acceleration which leads to the "centrifugal force" -- is directed inward, and is "centripetal". > > What I write there is in its entirety: > The denominator should use the sidereal day of 86 164.0905 seconds > instead of 86 400 since inertia is relative the stars and not the Sun. > David Jonsson 20:44, 11 January 2011 (UTC) --- Preceding unsigned > <http://en.wikipedia.org/wiki/Wikipedia:Signatures> comment added > by Davidjonsson <http://en.wikipedia.org/wiki/User:Davidjonsson> (talk > <http://en.wikipedia.org/wiki/User_talk:Davidjonsson> . contribs > <http://en.wikipedia.org/wiki/Special:Contributions/Davidjonsson>) That sure sounds right. (Just to be nit picky, I might argue that rotation is absolute, and the stars just provide some convenient distant markers; there's no reason I can see to think a centrifuge wouldn't work even if the universe were nearly empty.) > > David > > David Jonsson, Sweden, phone callto:+46703000370 > > > > On Tue, Jan 11, 2011 at 10:39 PM, Harry Veeder <[email protected] > <mailto:[email protected]>> wrote: > > Is this the right link? > Harry > > > *From:* David Jonsson <[email protected] > <mailto:[email protected]>> > *To:* vortex-l <[email protected] <mailto:[email protected]>> > *Sent:* Tue, January 11, 2011 3:47:23 PM > *Subject:* [Vo]:g on Wikipedia erroneously defined > > Hi > > Ain't I right? > > http://en.wikipedia.org/wiki/Talk:Standard_gravity#effect_of_centripetal_acceleration > > Sidereal period should be used and not solar. > > Do you support a change? > > David > > David Jonsson, Sweden, phone callto:+46703000370 > > >
