Tamilnadu BoardEnglish MediumSTD 8ScienceForces and Pressure.2 Marks
Question
Explain the effect on the pressure when area on which it is applied, decreases.
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Answer
As, we know that pressure is defined as the force acting on a unit area of a surface, then,
Force
$\text { Pressure }=\frac{\text { Force }}{\text { Area }}$
$P =\frac{F}{A}$
$p \propto \frac{1}{A}$
So, pressure is inversely proportional to the area on which force is applied. Therefore with the decrease in area the pressure increases.
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