View Single Post
Unread 03-26-2003, 11:27 AM   #78
bigben2k
Responsible for 2%
of all the posts here.
 
bigben2k's Avatar
 
Join Date: May 2002
Location: Texas, U.S.A.
Posts: 8,302
Default

Hum...

so if cross section is irrelevant, the water would be raised/lowered by 30 mm, no matter what the diameter...

...but if the diameter is say, 1 meter, the volume of water moved would be 0.024 cubic meters, which is 24 liters, which weighs 24 kg.

If the diameter was 2 cm, then the volume of water would be 0.0000094248 cubic meters, which is 0.009425 liters, which weighs 0.009425 kg, aka 9.4 grams.

Given that the fan will produce a fixed amount of force, the diameter very much makes a difference.

Am I wrong?
bigben2k is offline   Reply With Quote