"Harry K" wrote in message
...

I am assuming you have a rope attached to the pot, that runs up to a
hook or
pulley attached to the ceiling,, then back down to an cleat.
If the pot weighs 40 lbs, the top hook in the ceiling, (or window frame,
whatever!) with the pulley will be carrying 80 lbs. The tension,
(weight)
felt by the rope at the cleat will be 40 lbs.
Greg

Wrong. The tension on both sides will be equal (20 lbs) and the top
hook will feel 40lbs. There is nothing being added to the 40 lbs to
increase it to 80. I think you have confused the effect of a pulley
which, when rigged right, will cut the lifting force by 1/2.



Wanna bet?
Greg