A gas is contained in a vertical, frictionless piston-cylinder device. The piston has a mass of 3.2 kg and cross-sectional area of 35 cm. A compressed spring above the piston exerts a force of 160 N on the piston. If the atmospheric pressure is 95 kPa, the pressure of the gas inside the cylinder is mostly equal to which one below. Please draw the free-body diagram and show the work that supports your chosen answer. A. 140 kPa B. 150 kPa C. 160 kPa D. 170 kPa A = 35 cm == Palm = 95 kPa mp = 3.2 kg