Question

explain pressure with an example​

Answer 1

Answer:

Pressure is defined to be the amount of force exerted per area. P = F A {\Large P=\dfrac{F}{A}} P=AF. So to create a large amount of pressure, you can either exert a large force or exert a force over a small area (or do both).

or,

The amount of force exerted (thrust) on a surface per unit area is defined as ‘Pressure’. It can also be defined as the ratio of the force to the area (over which the force is acting).

Formula and Unit of Pressure

Pressure (P) = Thrust/ Area

The SI unit is ‘pascals (Pa)’. 1 Pa = 1N/m2  

Example: It is easier to hammer a sharp pin than to hammer a blunt pin. This is because the area at the end of the sharp pin is smaller than the area at the end of a blunt pin. This leads to an increase in pressure leading to hammer the sharp pin easily.

Types of Pressure

Atmospheric Pressure

Absolute Pressure

Differential Pressure

Gauge Pressure

Answer 2

Explanation:

pressure is defined as a measure of the force applied over a unit area pressure is often expressed in units of pascals(pa)newton per square

Example:A simple example of pressure may be seen by holding a knife to a piece of fruit...if you turn the blade so the cutting edge is pressed into the fruit the same force is applied over a much smaller surface area(vastly increased pressure),do the surface cuts easily