boy, you guys are stucking fupid. give you an example understandable by a
sophomore in high school and you STILL insist on anchoring in such a fashion as
to injure boaters around you. Did you ever consider some district attorney
might charge you with criminal neglegence if you hurt someone anchoring your
silly, lazy ass way (which, in fact, is your justification as to why you --
utterly unwilling to pull up an anchor by hand -- install an electric anchor
puller that works only with chain).

catenaires, and they strains imposed on the end points, is a freshman physics
discussion understood by tens of millions of 18 year old boys every year.

From: "NOYB"
Date: 9/18/2004 8:14 PM Eastern Daylight Time
Message-id:


"Gene Kearns" wrote in message
.. .
On 18 Sep 2004 21:15:33 GMT, (JAXAshby) wrote:

What happens during the interaction of forces on the rode would be
most fascinating.

a way to simplified look at it is to consider the chain/rode/line to have
zero
weight pulled between two points (say 100 feet apart), then hang a 1#
weight in
the center point and check how much strain it put on the end points when
the
weight hangs 20 feet, then 10 feet, then 5 feet, then 1 foot, then 1
inch, then
1/10th inch. Just use trig to figure the forces.

So.... we just used intuitive trig to figure out why (1) we use scope
with an anchor and (2) why we don't tie boats to the dock with chain.
Now *that* is some real science......

And your "simplified look" does not apply.... an anchor rode does not
employ both ends at the same "Y" value.... therefore assumptions of
Y=Y'=0 do not obtain and is, therefore, the root cause of your lack
of understanding in this area. There isn't *anything* *attached* to
the middle.


the forces get out of hand ********VERY******** quickly. Even worse, is
that
the weight in the middle (or chain) has momentum as the boat rocks, so
the
"natural" position of the weight overshoots and makes for seriously high
g-loads.


There is no weight "in the middle" (other than the weight of the rode)
.... so you put two anchors on the same rode? Odd.

Also, in jaxassby's example, the points can't always be 100' apart if the
weight is hanging further and further down each time...unless he has an
extremely elastic line and there's a large amount of stretch. I assume that
jaxassby meant to say "using a 100' rope".