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<DIV><FONT size=2 face=Arial>GF.. If you triangulate the energy it take to lift
the limp mooring ropes, and I assume there were more than one, that energy would
be more than a one pound force..</FONT></DIV>
<DIV><FONT size=2 face=Arial>H.</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=gfwhell@aol.com href="mailto:gfwhell@aol.com">GF</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=gasification@lists.bioenergylists.org
href="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, May 26, 2011 4:54
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Gasification] OT, now, Boat
pulls easier than Cart?</DIV>
<DIV><BR></DIV><FONT color=black size=2 face=arial>
<DIV>There is of course greater friction when moving an object through
fluids of greater density, However a boat, sitting in a fluid at rest,
will move, if pushed by even the slightest force. This would also apply if
ball bearings were perfectly round. because their surfaces would not touch the
race,due to the principle that it is impossible for a perfect sphere to touch
a perfectly smooth surface as the point of contact is infinite.<BR>Having
said that. one early morning I happened upon a moored 100 ton barge loaded
with coal floating in the canal which had a looking glass surface, the
mooring ropes were limp, the barge was totally at rest as was the air and the
water surrounding it. I applied force with my little finger not more than 1lb.
to see if it would move, nothing happened at first but then the barge began to
move in the direction it was being pushed, I just cannot see a vehicle other
than a vessel moving with such a small force being applied.</DIV>
<DIV> </DIV>
<DIV>GF</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> -----Original Message-----<BR>From: Pete & Sheri
<spaco@baldwin-telecom.net><BR>To: 'Discussion of biomass pyrolysis and
gasification' <gasification@lists.bioenergylists.org><BR>Sent: Thu, May
26, 2011 12:48 pm<BR>Subject: Re: [Gasification] OT, now, Boat pulls easier
than Cart?<BR><BR></DIV>
<DIV style="FONT-FAMILY: arial,helvetica; COLOR: black; FONT-SIZE: 10pt">
<DIV
style="BACKGROUND-COLOR: #fff; MARGIN: 0px; FONT-FAMILY: Tahoma, Verdana, Arial, Sans-Serif; COLOR: #000; FONT-SIZE: 12px"
id=AOLMsgPart_0_8f28e146-5701-419a-a36f-34e7d696f77e><PRE style="FONT-SIZE: 9pt"><TT>I'm sorry, but I disagree with your comments that the cart would have more
friction than the boat, loaded or
Not. The density of water vs air has a lot to do with it. But the two main
friction sources to compare would be water friction vs bearing and
wheel-to-surface friction of the vehicle. I'd agree with you if the cart
had no wheels and had to be dragged down the road as the boat has to be
dragged in the water, but this is not the case.
In the history of west in the USA, people used sails on "covered wagons" for
motive power. They worked okay as long as there were relatively smooth
surfaces to run them on.
Google this:
<A href="http://en.wikipedia.org/wiki/Land_sailing" target=_blank>http://en.wikipedia.org/wiki/Land_sailing</A>
Pete Stanaitis
-----------------
-----Original Message-----
From: <A href="mailto:gasification-bounces@lists.bioenergylists.org">gasification-bounces@lists.bioenergylists.org</A>
[<A href="mailto:gasification-bounces@lists.bioenergylists.org?">mailto:gasification-bounces@lists.bioenergylists.org</A>] On Behalf Of Anand
Karve
Sent: Thursday, May 26, 2011 10:57 AM
To: Discussion of biomass pyrolysis and gasification
Subject: Re: [Gasification] Underwater gasification?
Dear Henri,
you have misunderstood me. I said that hauling a boat floating in
water was easier than pulling a cart on land. I was comparing the
friction of the boat with water with the friction of a loaded cart on
land. The density of air and water have nothing to do with it. I
mentioned air only as a motive force. Wind can move a boat easily
through water but the wind of the same velocity would be unable to
move a cart on a road.
Yours
A.D.Karve
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