What is the formula for pressure?
Pressure = force / area
Pressure is the force acting perpendicularly per unit area of a surface.
Pressure = \(\frac{\text{Force}}{\text{Area}}\)
SI unit = \(\frac{\text{N}}{\text{m}^{2}}\) = pascal (Pa)
Check: a sharp knife cuts easily because the same force acts on a very small area, giving high pressure. Multiplying force by area, or dividing area by force, gives quantities that do not match this unit.
Hence, Pressure = force / area.
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Important Questions from Pressure
Deep-sea diving vessels have to withstand pressure from the crushing effect of seawater acting-
The pressure increases with-
- At high altitudes, the air pressure is _______ than at sea level.
The atmospheric pressure at sea level is ________, and is taken as the normal atmospheric pressure.
The standard atmospheric pressure can not be expressed as
