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प्रश्न
The S.I. unit of upthrust is :
विकल्प
Pa
N
kg
kg m2
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उत्तर
The S.I. unit of upthrust is : N
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संबंधित प्रश्न
What causes buoyant force (or upthrust) on a boat ?
Fill in the blank with suitable word :
It is the................. force which makes objects appear lighter in water.
A body floats in a liquid when its weight becomes equal to the weight of the liquid displaced by its submerged part.
The buoyant force experienced by a body when floating in saltwater is ....... to or same that of when floating in pure water.
Describe a simple experiment to demonstrate that a liquid enclosed in a vessel exerts pressure in all directions.
Complete the following sentence :
Pressure is .................... in all directions about a point in a liquid.
- 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?
Complete the following sentence.
Mass = .................... × density
Complete the analogy.
Downward force: Weight:: Upward force offered by liquid: _____
Complete the analogy.
Downward force : Weight :: Upward force offered by liquid : _____.
