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e 1-62 A gas is contained in a vertical, frictionless piston- e cylinder device. The piston has a mass of 3.2 kg and a cross- sectional area of 35 cm2. A compressed spring above the pis- ton exerts a force of 150 N on the piston. If the atmospheric r's pressure is 95 kPa, determine the pressure inside the cylin- der. Answer: 147 kPa T In 150 N Patm = 95 kPa mp = 3.2 kg A = 35 cm2 FIGURE P1-62