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**CefGemYAffews** · 09-02-2012, 03:27 AM

> There may be some point where the thinness of the tube/vessel has the adhesion of the liquid to the walls starting to reduce the weight of the liquid mass

It has to get a few mm across for that to happen. For most tanks the pressure is dependent only on depth.

For another piece of fun, did you know that we weigh less in Australia than in England because the acceleration due to gravity is larger over there? It's quite a significant difference, of the order of 0.1%. Which means that in England the pressure in a water tank at a depth of 10 m is, um, about 200 Pa more.

> PS. "weigh less"

I weigh about 1006 Newtons.

09-02-2012, 03:27 AM	#6
CefGemYAffews Join Date Oct 2005 Posts 423 Senior Member	> There may be some point where the thinness of the tube/vessel has the adhesion of the liquid to the walls starting to reduce the weight of the liquid mass It has to get a few mm across for that to happen. For most tanks the pressure is dependent only on depth. For another piece of fun, did you know that we weigh less in Australia than in England because the acceleration due to gravity is larger over there? It's quite a significant difference, of the order of 0.1%. Which means that in England the pressure in a water tank at a depth of 10 m is, um, about 200 Pa more. > PS. "weigh less" I weigh about 1006 Newtons.
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