So the idea of what is a comfortable temperature is a little more complicated and we will exam in a future lab experience. -cylinder device (shown below). The piston has a mass of 4kg and a crosssectional area of 35cm2. A compressed spring above the piston exerts a force of 60N on the piston, and the atmospheric pressure above the piston is 95kPa. Neglecting cylinder friction, what is the pressure below the piston