A cylinder with cross-section area A floats with its long axis vertical in a liquid of density p. Pressing down on the cylinder pushes it deeper into the liquid. Find an expression for the force needed to push the cylinder distance a deeper into the liquid and hold it there. Express your answer in terms of the variables p, A, and a. F = Submit Part B IV— ΑΣΦ 1 → W = A 4.0-cm-diameter cylinder floats in water. How much work must be done to push the cylinder 20 cm deeper into the water? Express your answer with the appropriate units. Request Answer O Value Units ?

What is density of a woman floats in fresh water with 4.00% of her volume above the surface? (This could be measured by placing her in a Wii marks on the side to measure how much water she displaces when floating and when held under water.) (b) What percent of her volume is above surface when she floats in seawater?

Archimedes' principle can be used to calculate the density of a fluid as well as that of a solid. Suppose a chunk of iron with a mass of 390.0 g in air is found to have an apparent mass of 350.5 g when completely submerged in an unknown liquid. (a) What mass of fluid does the iron displace? (b) What is the volume of iron, using its density as given Table 14.1? (c) Calculate the fluid's density and identify it.

A man has a mass of 80 kg and a density of 955kg/m3 (excluding the air in his lungs). (a) Calculate his volume. (b) Find the buoyant force air exerts on him. (c) What the ratio of the buoyant force to his weight?