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**Force of a Tank Hatch in terms of Pressure**

## Homework Statement

The tank shown in the figure below is filled with water to a depth of H1 = 1.88 m.

http://educog.com/res/brookscole/serway/Physics_for_Scientists_and_Engineers_6ed/Chap14/graphics/serb1514.gif

At the bottom of one of the side walls is a rectangular hatch H2 = 1.15 m high and W = 1.90 m wide. The hatch is hinged at its top. Determine the magnitude of the force that the water exerts on the hatch.

## Homework Equations

F=[tex]\int^{H1-H2}_{0} W\rho g(H1-y)dy[/tex]

## The Attempt at a Solution

The equation above is what my professor gave us in class to use for this problem.

For the solved integral, I got:

W[tex]\rho[/tex]g[H

_{1}y-y

^{2}/2]

After putting in all the numbers, I don't get the right answer. Is my solved integral wrong? Or did my professor give us the wrong integral?

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