- The pressure, the force applied is directly proportional to its magnitude, that receives the area.

P α F……….. (i) - The force that gives pressure is inversely proportional to the area that receives the force.

P α 1/A ………….. (ii)

From equation (i) and (ii) we get,

P α F/A

or, P = K (F/A) , where K= constant

If 1 N force is applied in 1 square meter area, then the pressure will be 1N/m^{2} and thus, k=1.

Then,

P=F/A. Proved.