Topic: Fluid Mechanics
The horizontal component of force on a curved surface is equal to the-
- A. Product of pressure at its centroid and area
- B. Weight of liquid retained by the curved area
- C. Force on a vertical projection of the curved surface
- D. Weight of liquid vertically above the curved surface
Answer: C. Force on a vertical projection of the curved surface
Explanation: The horizontal component of force on a curved surface is equal to the force on a vertical projection of the curved surface. Horizontal component $P_{H}$ = Total pressure force on the projected area of the curved surface on vertical plane. Vertical component $P_{V}$ = Weight of the liquid supported by the curved surface up to the free surface of the liquid.