Hydrostatic Force on Plane Surfaces - Quiz Session Starter Quiz

A vertical plane metal gate size is 3 m × 3 m holds water one side up to its top. The moment of hydro–static thrust on gate about its top edge, in kN–m is (Take g = 10 m/s²)

A circular disc of diameter ‘D’ is immersed vertically in a liquid of density ‘p’. The topmost point of the disc just touches the liquid surface. The depth of the centre of pressure from the wafer surface would be.

Consider the following statement relating to hydrostatic forces on submerged surface:

1). The pressure centre is always below the centroid of any plane submerged surface that is mot horizontal.

2). Total force on a curved surface is the product of the average force and the submerged area.

3). The magnitude of hydrostatic pressure at a particular depth is a function of the shape of the surface.

4). The vertical component of force on a body completely submerged in a static reservoir of fluid is equal to the weight of the fluid displaced by the body.

Of these statements.

As the depth of immersion of a vertical plane surface increases, the location of centre of pressure:

Which one of the following statement is correct?

What is the depth of the center of pressure form the top for the rectangular lamina which is vertically inside the water of height h?

An inclined plate 2 m long and 1 m wide lies with its length inclined at  to the surface of water and the nearest edge 1 m below it. If the specific weight of water is 1000 kg/m³, then the total pressure force on the plate (in kg) is approximately.

A tank is 2.0 m deep and square length of 4m at the top and square length of 3m at the bottom. The four sides of the tank are plane and each has some trapezoidal shape. The tank is completely filled with liquid of specific gravity 0.8 . Determine resultant pressure each side.