Integration - Applied (water tank)

ThomasMath

New member
Joined
Nov 7, 2015
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Hello! I have a task here, which I have done, but I do not see why my method is wrong.

The text is as follows:

A water tank is shaped like a pyramid standing on its head. Each side has a width of 5 meters at the top,
and the idea is 8 meters deep. Find the total force F against the four walls that occurs due to hydrostatic pressure
when the tank is full.

Assume that gravity g = 10 m/s2 and the mass density of water is 103 kg/m3.

What have I done?

I will attach a picture, as I could not find if it is possible to use Latex on here.

if you can not open the picture, then here is a screenshot of the picture:

6bb90699df693bbaa357351b7d39176e.png


https://gyazo.com/6bb90699df693bbaa357351b7d39176e

The thing is that we are using a website called "Maple T.A", and whenever I submit this answer it appears to be wrong. I have also tried dividing that answer by 4, which would give 160000/3, but it is still wrong. That is why I believe what I have done is wrong.

Thank you so much for your time.

Have a great weekend!
 

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