The vertical component of pressure force on a submerged curved surface is equal to
- Aits horizontal component
- Bthe force on a horizontal projection of the curved surface
- Cthe weight of the liquid vertically above the curved surfaceCorrect
- Dthe product of the pressure at centroid and surface area
Solution
Concept
Vertical force on a curved surface
Formula
Fv = γ V
Step-by-step solution
1. Fv equals the weight of the liquid above the surface up to the free surface.
Explanation
Fv = weight of the liquid column above.
Why the other options are wrong
Horizontal force is on the vertical projection.
Shortcut
Fv = weight above.
Correct answer: C) the weight of the liquid vertically above the curved surface