Question

The SI unit of hydro-static pressure is:
A. Pa
B. $N{m^{ - 1}}$
C. Nm
D. ${\text{kg wt }}{{\text{m}}^{{\text{ - 2}}}}$

Answer 1

The physical force exerted on an item is known as pressure. The force applied per unit area is perpendicular to the surface of the objects. F/A is the basic formula for pressure (Force per unit area). Pascals is the unit of pressure (Pa). Absolute, atmospheric, differential, and gauge pressures are examples of pressure types.

Complete step by step answer:
Fluid statics, often known as hydrostatics, is a field of fluid mechanics that investigates "fluids in hydrostatic equilibrium and the pressure in a fluid or imposed by a fluid on an immersed body." It covers the study of fluids in stable equilibrium at rest, as opposed to fluid dynamics, which is the study of fluids in motion.

Fluid statics is the study of all fluids at rest, whether compressible or incompressible. Hydrostatics is a subset of fluid statics. Hydraulics, the engineering of apparatus for storing, transferring, and utilising fluids, is based on hydrostatics.

The pressure produced by a fluid at equilibrium owing to gravity at any moment in time is known as hydrostatic pressure.When a downward force is applied, hydrostatic pressure is proportional to the depth measured from the surface as the weight of the fluid increases. In a closed container, fluid pressure can be generated by gravity, acceleration, or forces.

Consider adding a layer of water to the bottle's top. The pressure is exerted by the layer of water pushing on the bottle's sides. The pressure imposed by the top layer on the bottom increases as we go down the bottle from top to bottom. This phenomenon is the cause of increased pressure at the bottom of the container. SI Unit of Hydrostatic pressure is Pa.

Hence option A is correct.

Note: The pressure produced by a fluid at equilibrium at a particular location inside the fluid owing to gravity is known as hydrostatic pressure. Because of the rising weight of fluid applying downward force from above, hydrostatic pressure rises in proportion to depth measured from the surface. When a fluid is contained within a container, the depth of an object submerged in the fluid can be determined. The greater pressure an object receives the deeper it is submerged in the fluid. This is due to the fluid's weight being greater than it.Due to the weight of the fluid, the more pressure is applied on the submerged item the denser the fluid above it is.