The brass tube AB (E = 15 x 106 psi) has a cross-sectional area of 0.18 in and is fitted with a plug at A. The tube is attached at B to a rigid plate that is itself attached at C to the bottom of an aluminum cylinder (E = 10.4 x 106 psi) with a cross-sectional area of 0.40 in. The cylinder is then hung from a support at D. To close the cylinder, the plug must move down through 364364 in. Determine the force P that must be applied to the cylinder. D C P A B 15.0 in. .in.