What is buoyancy?

What is buoyancy?

• A. The downward force of gravity
• B. The center of gravity of the crew
• C. The upward force of water displaced by the hull
• D. The sideways force from wind

Answer: (C)

Buoyancy is the upward force water applies to a vessel that is submerged or partly submerged. This force comes from water pressure, which increases with depth, so the greater the submerged volume of the hull, the stronger the upward push. According to Archimedes’ principle, the buoyant force equals the weight of the water displaced by the hull. When a boat is floating, this upward buoyant force balances the boat’s weight, keeping it at the water’s surface. This is different from gravity, which acts downward as weight; it’s not about the center of gravity, which concerns how mass is distributed, and it’s not related to wind, which is a sideways force.

Buoyancy is the upward force water applies to a vessel that is submerged or partly submerged. This force comes from water pressure, which increases with depth, so the greater the submerged volume of the hull, the stronger the upward push. According to Archimedes’ principle, the buoyant force equals the weight of the water displaced by the hull. When a boat is floating, this upward buoyant force balances the boat’s weight, keeping it at the water’s surface. This is different from gravity, which acts downward as weight; it’s not about the center of gravity, which concerns how mass is distributed, and it’s not related to wind, which is a sideways force.