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प्रश्न
Complete the following sentence :
Pressure at a depth h in a liquid of density p is ......................
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उत्तर
h ρ g
संबंधित प्रश्न
Name the scientist who gave he magnitude of buoyant force acting on a solid object immersed in a liquid.
Fill in the blank with suitable word :
It is the................. force which makes objects appear lighter in water.
What is the cause of buoyant force ?
What is the unit of relative density?
Distinguish between density and relative density.
For a given object, the buoyant force in liquids of different ______ is ______.
- 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?
Two cylindrical vessels fitted with pistons A and B of area of cross-section 8 cm2 and 320 cm2 respectively are joined at their bottom by a tube and they are completely filled with water. When a mass of 4 kg is placed on piston A, Find:
- the pressure on piston A,
- the pressure on piston B, and
- the thrust on piston B.
The mass of a block made of certain material is 13.5 kg and its volume is 15 × 10-3 m3.
(a) Calculate upthrust on the block if it is held fully immersed in water.
(b) Will the block float or sink in water when released? Give a reason for your answer.
(c) What will be the upthrust on block while floating?
Take density of water = 1000 kg m-3.
The center of gravity of the floating body and the center of buoyance are in the same ______ line.
