Pressure - Nov 11th 2024

Pressure is the force (or thrust) acting on a unit area.

Thrust is the total force acting normally on a surface is called the thrust. It is a kind of force that is measured in [N]

Pressure = Force/Area

The SI unit for Pressure is Pascals [Pa] it can also be written as Newtons per meter square [N/m²]

1 Pascal [Pa] = 1N/m²

One pascal is defined as the pressure exerted on a surface of an area of 1m² by a force of 1 Newton for meteorological purposes the unit of measure “bar”

1 bar = 10^5Pa

The fact is that when the same amount of force acting on a smaller area exerts greater pressure where as if it acts on a larger area it exerts less pressure.

Density is the mass per unit volume of a substance.

D = M/V

The SI unit for density is kilogram per cubic meter [kg/m3]

kg/m³ / 1000 = g/cm³

Density is a characteristic property of a substance. Different substances have different densities, some of them are as follows

Pressure by fluids

Any substance that can flow is called a fluid. All liquids and gases are called fluids.

Pressure by fluids = height x density x gravity