Explanation:
It is given that,
Total weight of the piston, W = F = 70 N
Area of the piston, [tex]a=5\times 10^{-4}\ m^2[/tex]
Let P is the pressure exerted on the piston by the gas. The force per unit area is called the pressure exerted pressure of the gas. Mathematically, it is given by :
[tex]P=\dfrac{F}{A}[/tex]
[tex]P=\dfrac{70\ N}{5\times 10^{-4}\ m^2}[/tex]
[tex]P=1.4\times 10^5\ Pa[/tex]
We know that the atmospheric pressure is given by :
[tex]P_o=1.013\times 10^5\ Pa[/tex]
So, the pressure is given by :
[tex]p=P+P_o[/tex]
[tex]p=1.4\times 10^5+1.013\times 10^5[/tex]
[tex]p=2.41\times 10^5\ Pa[/tex]
Hence, this is the required solution.