1. As shown, a cylinder fitted with a piston is filled with 600 lb of saturated liquid ammonia at 45F. The piston weighs 1 ton (2000 lbf) and has a diameter of 2.5 ft. a) What is the volume occupied by the ammonia, in ft? b) Ignoring friction, is it necessary to provide mechanical attachments, such as stops, to hold the piston in place? Explain. Patm1 atm Piston Ammonia Saturated liquid at 45F m=600 lb Weight 1 ton D=2.5 ft