Water stands at depth 'd' behind a dam of width 'w'.(adsbygoogle = window.adsbygoogle || []).push({});

i.

Find an expression for the net force of the water on the dam.

ii.

Evaluate the net force on a 100m high dam with a 60m water depth.

Attempt

For the first part:

p=F/A

A=wd

pwd=F

Then integrate from 0 to d which gives .5pw(d^2).

Does this even look remotely correct, i have a feeling there should be a g somewhere in there?

As for the 2nd part I'm stumped, how do I find the p term from that information.

Any help as always is greatly appreciated :)

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# Homework Help: Pressure (Net Force)

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