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(a) Define pressure.
(b) What is the relation between pressure, force and area ? ,
(c) Calculate the pressure when a force of $200\ N$ is exerted on an area of:
(i) $10\ m^2$
(ii) $5\ m^2$
(a). Pressure: Force acting upon per unit area of a body perpendicularly is known Pressure.
(b). Relation between pressure, force, and area:
$\boxed{P=\frac{F}{A}}$
Here, $P\rightarrow$pressure
$F\rightarrow$force
$A\rightarrow$area
(c). Force exerted $F=200\ N$
(i). Area $A=10\ m^2$
Therefore, pressure $P=\frac{F}{A}$
$=\frac{200\ N}{10\ m^2}$
$=20\ N/m^2$
Therefore, pressure is $20\ N/m^2$ when the force is exerted on $10\ m^2$ areas.
(ii). Area $A=5\ m^2$
Therefore, pressure $=\frac{F}{A}$
$=\frac{200\ N}{5\ m^2}$
$=40\ N/m^2$
Therefore, pressure is $40\ N/m^2$ when $200\ N$ force is exerted on $5\ m^2$ areas.
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