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प्रश्न
What do you mean by buoyancy?
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उत्तर
- The upward force exerted by a liquid on an object immersed in it is known as buoyancy.
- When you try to immerse an object in water, then you can feel an upward force exerted on the object, which increases as you push the object deeper into the water.
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संबंधित प्रश्न
Distinguish between density and relative density.
Pressure at the free surface of a water lake is P1, while at a point at depth h below its free surface is P2. (a) How are P1 and P2 related? (b)Which is more P1 or P2?
A dam has broader walls at the bottom than at the top. Explain.
The pressure P1 at the top of a dam and P2 at a depth h form the top inside water (density p) are related as :
- Calculate the height of a water column which will exert on its base the same pressure as the 70 cm column of mercury. Density of mercury is 13.6 g cm-3.
- Will the height of the water column in part (a) change if the cross-section of the water column is made wider?
A body experiences an upthrust F1 in river water and F2 in sea water when dipped up to the same level. Which is more, F1 or F2? Give reason.
Is pressure a vector quantity?
The magnitude of buoyant force acting on an object immersed in a liquid depends on ______ of the liquid.
The point at which the force of buoyancy is supposed to act is known as ______.
