Physics - Heat & Thermo Question with Solution | TestHub

A mass less piston, which can move without friction, closes a sample of Helium in a vertical, thermally insulated cylinder, which is closed at its bottom, and the cross-section of which is $A=2{\text{ dm}}^2$. Above the piston there is a fixed stand to which an unstretched spring of spring constant 2000 N/m is attached, whose bottom end is at a distance of 2 dm from the piston when the volume of the gas is $V_0=8{\text{ dm}}^3$. The external pressure is $p_0=10^5$ Pa, $g=10{\text{ m/s}}^2$. The gas confined in the cylinder is heated with an electric heating element. (1 dm $=10^{-1}$ m)