“Pressure is defined as the force applied per unit area in a direction perpendicular to the surface.”
Pressure is the amount of force exerted on a surface per unit area of that surface.
SI unit of pressure is Pascal (Pa), where 1 Pa = 1 N/m².
Smaller area → more pressure (e.g., knife edge), larger area → less pressure (e.g., snowshoes).
Fluids (liquids and gases) exert pressure in all directions. This is the principle behind hydraulic systems.
Fluid pressure increases with depth.
Thrust is the total force acting perpendicular to a surface. It is measured in Newtons (N).
Pressure is the effect of thrust on a unit area.
The pressure exerted by the weight of air in the Earth's atmosphere is called atmospheric pressure.
Measured using a barometer.
Atmospheric pressure decreases with increase in height from sea level. This is why mountain climbers carry oxygen cylinders.
Pressure is a crucial physical quantity in both daily life and industrial applications. Understanding pressure helps us design systems involving fluids, gases, and mechanical equipment effectively.