Ok no problem. Michel
----- Original Message ----- From: "Harry Veeder" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, February 24, 2007 5:31 AM Subject: Re: [Vo]: Lifters > > I understand your example and I can see how it applies to this lifter. > Never mind me...I was just deluding myself. > > Harry > > Michel Jullian wrote: > >> ??? Look, this tubular lifter has nothing special, it just has a loose skirt >> moving under internal forces. Think of the paddle wheel having a loose axle. >> The axle will jump forward, trying to leave the boat behind, when you engage >> the clutch in "forward gear", and then will stay there as long as the boat >> pushes on its paddles. Very much the same, very prosaic. >> >> Michel >> >> ----- Original Message ----- >> From: "Harry Veeder" <[EMAIL PROTECTED]> >> To: <[email protected]> >> Sent: Friday, February 23, 2007 7:56 PM >> Subject: Re: [Vo]: Lifters >> >> >>> >>>> Michel Jullian wrote: >>> >>>>> Harry Veeder wrote: >>>>>> However, concerning the tubular lifter, I would argue that the >>>>>> elevated tube when the lifter is _accelerating upwards is evidence that >>>>>> the >>>>>> _internal forces_ don't add up to zero. >>>>> >>>>> The elevated tube is merely a "deformation" due to internal forces. >>> >>> >>> I think it means the weight of the elevated tube has essentially >>> disappeared (although the tube's inertia remains unchanged). >>> In other words, the lifter's ascending weight is less than >>> its stationary weight. >>> >>> Harry >>> >> >
