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## Homework Statement

A hinged water storage is shown below. Its top side is denoted as C, the narrow side as B and the long side as A. Assume water density is 1000 kg/m3 and gravity is 9.81 m/s2

Side A is hinged at the bottom edge and secured using a clasp at its top edge.

Dimensions are: L = 1m, H = 0.5m & W = 0.5m

Calculate the size and location of the water thrust force on side A

2. Homework Equations

2. Homework Equations

I = bh^3 / 12

## The Attempt at a Solution

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I've got the correct 1st moment but not the 2nd moment

I submitted this:

2nd moment of area

I = bh^3 / 12

I = 1 x 0.5^3 / 12 = 0.0104

1.00 x 0.5^2 / 12 + 1.00 x 0.5 x 0.25^2 = 0.0520 and been told the formula is wrong but in my notes it says I = bh^3 / 12 is the correct formula.

Any help would be really appreciated.

Greg.

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