Engineering Board Exam Reviewer · Applications: Centroid, Work, and Moment of Inertia · easy

A vertical rectangular gate 4 m wide has its top edge 2 m and its bottom edge 6 m below the water surface. Find the hydrostatic force on the gate, in kilonewtons. Use g=9.81 kN/m3.

  1. 313.92
  2. 392.4
  3. 627.84
  4. 1255.68

Answer

C. 627.84

Solution

F= 26 9.81,y,(4),dy=39.24≤ft[y2/2 ]26=39.24(16)=627.84 kN.

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