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Beginner@Phys
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Homework Statement
Water stands at depth d behind a dam of width w . Find an expression for the net force of the water on the dam. Express your answer in terms of the variables w,d,p (density), and appropriate constants.
Homework Equations
P=F/A or pressure=Force/Area
Hydrostatic pressure: p=p_0+pgd
The Attempt at a Solution
Fnet=P*A=(pgd)*A =pgd*w*d
I guess that p_0 cancels out, because atmospheric pressure is felt both by the dam and the water. Does this make sense?