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प्रश्न
State whether true or false. If false, correct the statement.
The weight of fluid displaced determines the buoyant force on an object.
विकल्प
True
False
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उत्तर
The weight of fluid displaced determines the buoyant force on an object- True
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संबंधित प्रश्न
What is the other name of buoyant force ?
What causes buoyant force (or upthrust) on a boat ?
A body experiences the same buoyant force when it floats or sinks 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 density of a body which sinks in water is ......... than 1000 Kg m-3.
Describe an experiment to determine the density of the material of a coin.
(i) The diameter of neck and bottom of a bottle are 2 cm and 10 cm, respectively. The bottle is completely filled with oil. If the cork in the neck is pressed in with a force of 1.2 kgf, what force is exerted on the bottom of the bottle?
(ii) Name the law/principle you have used to find the force in part (a).
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.
A beaker contains a liquid of density ‘ρ’ up to height ‘h’ such that ‘PA’ is atmospheric pressure and ‘g’ is the acceleration due to gravity. Answer the following questions:
- What is the pressure on the free surface of the liquid?
- What is the pressure on the base of the beaker?
- What is the lateral pressure at the base on the inner walls of the beaker?
Is thrust a scalar or vector quantity?
