Engineering Board Exam Reviewer · Fluid Mechanics · medium

What is the total hydrostatic force per meter of length on a vertical dam face holding water 4 m deep?

  1. 78.48 kN
  2. 156.96 kN
  3. 39.24 kN
  4. 19.62 kN

Answer

A. 78.48 kN

Solution

F = 1/2 h2 = 1/2(9.81)(42) = 78.48 kN per meter, acting h/3 = 1.33 m above the base.

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