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प्रश्न
Describe a simple experiment to demonstrate that a liquid enclosed in a vessel exerts pressure in all directions.
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उत्तर
Take a can or large plastic bottle filled with water. Place it on a horizontal surface. Make a series of holes in the wall of the vessel anywhere below the free surface of the liquid. The water spurts out through each hole. This shows that the liquid exerts pressure at each point on the wall of the bottle.
Liquid exerts pressure at all points in all directions
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संबंधित प्रश्न
What is the other name of buoyant force ?
Relative density of a substance is expressed in g cm-3.
When does an object float or sink when placed on the surface of a liquid ?
Define the term relative density of a substance.
Write an expression for the pressure at a point inside a liquid. Explain the meaning of the symbols used.
The pressure inside a liquid of density p at a depth h is :
What is meant by the term buoyancy?
Define upthrust and state its S.I. unit.
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.
How is thrust different from pressure?
