- #1
PhyIsOhSoHard
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Homework Statement
Water flows at room temperature in a horizontal pipe with mean velocity of 1 m/s. Then a sudden contraction of the pipe changes the diameter to half the upstreams diameter (##\frac{D_1}{D_2} = 2##). What is the pressure drop (##p_1 - p_2##) from a point (1) upstream of the contraction to a point downstream of the contraction (2)?
Homework Equations
Mass conservation
Energy equation
The Attempt at a Solution
This is my attempt:
http://i.imgur.com/IDm6RVs.png
Unfortunately, the correct answer is 10500 Pa and I have no idea what I did wrong.