To: WSFAlist at keithlynch.net
Date: Tue, 24 Jun 2003 19:37:17 -0400
Subject: [WSFA] Re: bees on the wing
From: ronkean at juno.com
Reply-To: WSFA members <WSFAlist at keithlynch.net>

On Tue, 24 Jun 2003 18:04:40 -0400 "Ted White" <twhite8 at cox.net> writes:

> Because of the weight you tied to the balloon.  QED:  When the
> balloon
> floated free, against the truck roof, the weight was sitting on the
> truck
> floor, counterbalancing its lift.  When the weight was tied to the
> balloon,
> the balloon ceased to push against the truck ceiling by the same
> amount the
> weight weighed, and the weight no longer was adding to the truck's
> weight.
>

That analysis seems to show that the truck weighs the same comparing the
case where the inflated balloon pushes up against the ceiling, with the
case where the balloon and weight are floating free inside the truck.
That's all well and good, but it does not answer the question of whether
the truck weighs the same or less, when the balloon is inflated in either
of those two cases, compared with what the truck weighed before the
balloon was inflated.  That is the more perplexing question.

Ron Kean

.

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