Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: [Phys-l] buoyancy on a submerged pole



The two proposed forces are at right angles, so they can not oppose each
other. Actually the inward pressure on the rim is greater than the downward
pressure on the top because of the difference in height. There seems to be
a confusion between pressure and net force here.

John M. Clement
Houston, TX


If the inward water pressure at the cap's contact circle is less than the
downward pressure of the cap rim due to the head of water over
the cap which it is supporting
AND
the cap and base are smooth/compliant enough
to remove gaps where water can enter
THEN
the cap remains pressed down, wouldn't you say? :-)