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Topic: let say we have a liquid in a container... when the liquid in the container rises, the pressure exerted at the bottom of the container will decrease...
i dont understand why does the pressure at the bottom of the container decrease... can anyone help me to understand this??????? help...
Oct 6
6:59 PM

Posted by Mark Laurah

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What makes the liquid rise? Is the container filled from an external source or is it because of something happening inside the container?

Generally I cannot see why the pressure should decrease.
Oct 7
1:24 AM

Posted by Puti 

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I saw a question in physics book stated that the pressure at the bottom of liquid is decrease when the container added with more liquid..
maybe there's something that we need to consider in this case but I just couldn't think how it happen.. any idea?
Oct 7
6:33 PM

Posted by Mark Laurah

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The idea of the decreasing pressure is very surprising. My idea of hydrostatic pressure is that it increases with depth.

Could the book have a printing error?
Oct 7
11:22 PM

Posted by Puti 

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how can the pressure decrease?,since the base of the container remains the same,and the amount of liquid increases,so the pressure is supposed to increase

isnt it puti?
Oct 25
3:36 AM

Posted by Tushkacuty 

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Yes, that is how I understood it.
Oct 25
4:51 AM

Posted by Puti 

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i guess the book have a printing error..
thank you for sharing..
Nov 11
6:31 PM

Posted by Mark Laurah

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Perhaps in the right environment, the pressure on the bottom of the container could decrease as the pressure on the sides of the container rises?

Like, if you had 2 containers, container A is 5cm tall, 20cm wide and 20cm deep, while container B is 80cm tall, while 5cm wide and 5cm deep. Both containers would hold the same volume of water, but the pressure on container A would be higher on it's base, while the pressure on container B would be higher on it's sides.

Could that be the answer?
Nov 13
8:01 PM

Posted by Christoph 

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The problem requires that the lower bottom pressure is connected to higher surface level, not higher side area.

If the container has a very thin neck, or has a sponge filling it from halfway to the top, if might be possible that a capillary force sucks the liquid upwards and lets a small part of the bottom pressure be suspended with the walls instead.

If the bottom pressure becomes weaker when liquid is added, the shape of the container must be so that the capillary effect starts during the addition of the liquid.
Nov 14
6:06 AM

Posted by Puti 

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The problem requires that the lower bottom pressure is connected to higher surface level, not higher side area.

If the container has a very thin neck, or has a sponge filling it from halfway to the top, if might be possible that a capillary force sucks the liquid upwards and lets a small part of the bottom pressure be suspended with the walls instead.

If the bottom pressure becomes weaker when liquid is added, the shape of the container must be so that the capillary effect starts during the addition of the liquid.
Nov 14
6:06 AM

Posted by Puti 

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