79.A ship having a displacement of 24,000 tons and a draft of 34 feet in ocean enters a harbor of fresh water. If the horizontal section of the ship at the waterline is 32,000 sq. ft, what depth of fresh water is required to float the ship? Assume that marine ton is 2,240 Ib and that sea water and fresh water weight 64 pcf and 62.2 pcf, respectively. pcf = Ib/ft BF Area Figure (a)

A wooden barge of rectangular cross-section is 8 m wide, 4 m high, and 16 m long. It is transporting in seawater (s 1.03) a total load of 1,500 kN including its own weight and cargo. If a weight of 75 kN (Included in the 1,500-kN) is shifted a distance of 2.5 m to one side, it will cause the barge to go down 450 mm in the wdge of immersion and also rise 450 mm in the corresponding wedge of emersion The barge floats vertically (on an even keel) before the shifting of the weight. Compute how far above the waterline is the center of gravity of the loaded barge. W = 1500 kN 4, D D/2 BF 8 m 25m 60 kN/m 75 kN 1425 k 0.45 4 m Bo o BF 3.42 m

If a pool is irregularly shaped and a person being assessed has a weight mg= 800 N but weighs Fn= 40N while submerged. Assuming a residual volume Vres= 1.4 L= 0.0014 m^3. a. What is their average density b. What percentage of their body volume would be above water, while floating? c. What is their bodys volume d. How much more buoyant force would they experience with their lungs holding a full six liters? What percentage of thheir body volume would be above water now?

FLUID PROPERTIES / ARCHIMEDES PRINCIPLE