----- Original Message ----- 
From: "Harry Veeder" <[EMAIL PROTECTED]>
To: <vortex-l@eskimo.com>
Sent: Friday, February 23, 2007 5:46 AM
Subject: Re: [Vo]: Lifters


> Ok, now I understand the essentials of this explanation.

Good.
 
> 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.

Michel

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