Page 1 What Is Buoyancy Force ?When a body is immersed in fluid, an upward force is exerted by the fluid on the body. ?This upward force is equal to the weight of the fluid displaced by the body and is called the force of buoyancy. Page 2 What Is Buoyancy Force ?When a body is immersed in fluid, an upward force is exerted by the fluid on the body. ?This upward force is equal to the weight of the fluid displaced by the body and is called the force of buoyancy. What causes buoyant force? • Buoyant force is the force on an object exerted by the surrounding fluid. • When an object pushes water, the water pushes back with as much force as it can. • If the water can push back as hard, the object floats (boat). If not, it sinks (steel). Page 3 What Is Buoyancy Force ?When a body is immersed in fluid, an upward force is exerted by the fluid on the body. ?This upward force is equal to the weight of the fluid displaced by the body and is called the force of buoyancy. What causes buoyant force? • Buoyant force is the force on an object exerted by the surrounding fluid. • When an object pushes water, the water pushes back with as much force as it can. • If the water can push back as hard, the object floats (boat). If not, it sinks (steel). Forces Acting on Buoyancy • The buoyant force is caused by the difference between the pressure at the top of the object (gravitational force), which pushes it downward, and the pressure at the bottom (buoyant force), which pushes it upward • Since the pressure at the bottom is always greater than at the top, every object submerged in a fluid feels an upward buoyant force. Page 4 What Is Buoyancy Force ?When a body is immersed in fluid, an upward force is exerted by the fluid on the body. ?This upward force is equal to the weight of the fluid displaced by the body and is called the force of buoyancy. What causes buoyant force? • Buoyant force is the force on an object exerted by the surrounding fluid. • When an object pushes water, the water pushes back with as much force as it can. • If the water can push back as hard, the object floats (boat). If not, it sinks (steel). Forces Acting on Buoyancy • The buoyant force is caused by the difference between the pressure at the top of the object (gravitational force), which pushes it downward, and the pressure at the bottom (buoyant force), which pushes it upward • Since the pressure at the bottom is always greater than at the top, every object submerged in a fluid feels an upward buoyant force. Keep It Simple • Buoyancy= “the floating force” • Water is “heavier” than the object…so the object floats • Low density-more likely to float • Buoyant force is measured in Newtons (N) Page 5 What Is Buoyancy Force ?When a body is immersed in fluid, an upward force is exerted by the fluid on the body. ?This upward force is equal to the weight of the fluid displaced by the body and is called the force of buoyancy. What causes buoyant force? • Buoyant force is the force on an object exerted by the surrounding fluid. • When an object pushes water, the water pushes back with as much force as it can. • If the water can push back as hard, the object floats (boat). If not, it sinks (steel). Forces Acting on Buoyancy • The buoyant force is caused by the difference between the pressure at the top of the object (gravitational force), which pushes it downward, and the pressure at the bottom (buoyant force), which pushes it upward • Since the pressure at the bottom is always greater than at the top, every object submerged in a fluid feels an upward buoyant force. Keep It Simple • Buoyancy= “the floating force” • Water is “heavier” than the object…so the object floats • Low density-more likely to float • Buoyant force is measured in Newtons (N) How do you Calculate B F ? Buoyant Force= Weight of displaced fluid OR B F = W air - W water Buoyant = Weight of - Weight of object Force object in air in waterRead More

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