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प्रश्न
What do you mean by buoyancy?
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उत्तर
All liquid exerts a upward force on the body placed in it. This Phenomenon is called buoyancy.
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संबंधित प्रश्न
State whether the following statement is true or false :
The buoyant force depends on the nature of object immersed in the liquid
What is the cause of buoyant force ?
A boy get into a floating boat.
What happens to the buoyant force on the boat ?
How does the density of a body and that of a liquid determine whether the body will float or sink into that liquid?
What is meant by pressure? State its S.I. unit.
Differentiate between thrust and pressure.
Write an expression for the pressure at a point inside a liquid. Explain the meaning of the symbols used.
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?
- 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?
Define atmospheric pressure diving suits. Does a diving suit create buoyancy?
