A cylinder with cross-section area A floats with its long axis vertical in a liquid of density p. Part A Pressing down on the cylinder pushes it deeper into the liquid. Find an expression for the force needed to push the cylinder distance z deeper into the liquid and hold it there. Express your answer in terms of the variables P, A, and c. F = pAcg Submit Previous Answers ✓ Correct Part B A 5.0-cm-diameter cylinder floats in water. How much work must be done to push the cylinder 17 cm deeper into the water?