[EMAIL PROTECTED] wrote:
> [EMAIL PROTECTED] wrote:
> > Afraid not!
> >
> > For every inch of water pumped out, the boat will drop one inch lower
> > relative to the caisson. But for every inch of water pumped out, the
> > caisson will also rise one inch higher in the canal. So the level of
> > the top of the boat relative to the tunnel stays constant.
> Indeed, once the caisson is buoyant, this will be the case. However, if
> the caisson is sufficiently heavy that it is sitting on the bottom of
> the canal, you can pump water out of the caisson, the boat will drop and
> until neutral buoyancy is achieved the caisson will not rise.
Good idea! I think you've come up with a solution that might just work at
Froghall Tunnel. Patent it quick!
Martin L
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/canals-list/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/canals-list/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:[EMAIL PROTECTED]
mailto:[EMAIL PROTECTED]
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
