Which of the following statements most accurately describes buoyancy?Group of answer choicesBuoyancy is caused by a uniform pressure acting across an immersed body which allows for a volume changeBuoyancy only causes objects that are partially immersed to float when they have a low massBuoyancy is caused by a net pressure difference acting on an immersed bodyBuoyancy can help floating objects be more stable so long as the centre of buoyancy is below the centre of gravityNone of the available options
Question
Which of the following statements most accurately describes buoyancy?Group of answer choicesBuoyancy is caused by a uniform pressure acting across an immersed body which allows for a volume changeBuoyancy only causes objects that are partially immersed to float when they have a low massBuoyancy is caused by a net pressure difference acting on an immersed bodyBuoyancy can help floating objects be more stable so long as the centre of buoyancy is below the centre of gravityNone of the available options
Solution
Buoyancy is caused by a net pressure difference acting on an immersed body. This statement most accurately describes buoyancy.
Here's a step-by-step explanation:
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When an object is immersed in a fluid (like water), the fluid exerts pressure on all sides of the object.
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The pressure at the bottom of the object is greater than the pressure at the top because fluid pressure increases with depth.
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This difference in pressure creates a net upward force on the object.
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This upward force is what we call buoyancy.
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If the buoyant force is greater than the object's weight, the object will float. If it's less, the object will sink.
So, buoyancy is not caused by a uniform pressure, but by a pressure difference. It's not limited to low-mass objects or to objects that are partially immersed. And while the relative positions of the center of buoyancy and the center of gravity can affect stability, that's not a defining characteristic of buoyancy.
Similar Questions
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If an object floats in water, it experiences:a) Buoyant force equal to its weightb) Buoyant force greater than its weightc) No buoyant forced) Buoyant force less than its weight
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