A submarine is descending vertically into the ocean at a constant velocity. Explain how you would analyze the forces acting on the submarine and calculate the buoyant force exerted by the water. Discuss how the density of the submarine, the density of the surrounding water, and the volume of the submarine affect the buoyant force. Explain the concept of buoyancy and how it relates to Archimedes' principle. A submarine is descending vertically into the ocean at a constant velocity. Explain how you would analyze the forces acting on the submarine and calculate the buoyant force exerted by the water. Discuss how the density of the submarine, the density of the surrounding water, and the volume of the submarine affect the buoyant force. Explain the concept of buoyancy and how it relates to Archimedes' principle.