Water flows over a dam as depicted below. Across section 1 and 2 we have a hydrostatic pressure distribution. Calculate the force on the dam.
The Attempt at a Solution
My question is regarding control volume. The solution manual has given us this:
The two hydrostatic forces are understandable, as well as an unknown force Fk inside the CV. But what about the pressure acting on top and at the bottom of the CV? At the top the pressure must be P0, but what about at the bottom? Shouldn't this be an unknown pressure from the water? And when do we have to consider the weight of the fluid, i.e. mg in our CV analyses?
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