Engineering Board Exam Reviewer · Fluid Mechanics · hard
A rectangular gate 1 m wide and 3 m long is inclined at 60° to the horizontal, with its upper edge at the water surface. What is the hydrostatic force on the gate?
- 44.14 kN
- 22.07 kN
- 38.23 kN
- 76.46 kN
Answer
C. 38.23 kN
Solution
h = (L/2) 60° = 1.5(0.866) = 1.299 m. F = hA = 9.81(1.299)(3) = 38.23 kN.
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