# Gas pressure force

A cubic metal box with sides of length 20cm contains air at pressure of 1atm and a temperature of 300K. The box is sealed so that the volume is constant and heated to 400K. What is the net force on each side of the box?

thanks dudes.

Pengwuino
Gold Member
Use PV=nRT

Tom Mattson
Staff Emeritus
Gold Member
You'll also need the definition of pressure. It's a force divided by an area.

SpaceTiger
Staff Emeritus
$$\frac{P_2}{P_1}=\frac{T_2}{T_1}$$