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West Wight Potter Mailing List maintainer
dfarrell@ridgecrest.ca.us
List hosted by www.tscnet.com
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On Sun, Feb 13, 2000 at 06:23:48PM -0800, Rich Gort wrote:
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> West Wight Potter Mailing List maintainer
> dfarrell@ridgecrest.ca.us
> List hosted by www.tscnet.com
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>
> On Sun, 13 Feb 2000, Ted Duke wrote:
>
> > Robert,
> >
> > Yes, try it with single blocks. You can always adddoubles. My idea
> > was to lighten load on line and make raising easier.
>
> One of you engengers please help me. Just how does adding blocks lighten
> the load on the line? I can see how it makes raising easier by adding
> distance and thereby reducing the force required to move it a given
> distance, but overall I would think the work and the load on the line
> would be the same either way, or maybe even more with more blocks, given
> that there must be some resistance in each block. Is my thinking screwed
> up?
Fixed support
-------------
|
|
| winch
| ------
| /
| /
| /
| /
O/
+-------+
| load |
+-------+
Notice how each length of rope is carrying half the load? Extrapolate.
-- Kent Crispin "Do good, and you'll be kent@songbird.com lonesome." -- Mark Twain
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