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प्रश्न
What is upthrust ?
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उत्तर
Upthrust (buoyant force) is the upward force exerted by a liquid when an object is immersed in it.
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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 ?
Define the term relative density of a substance.
Which of the following will sink or float on water? (Density of water = 1 g Cm-3)
body C having density 1100 kg m-3
How does the liquid pressure on a diver change if :
The diver moves horizontally?
Complete the following sentence :
A piece of wood is held under water. The upthrust on it will be ___________ the weight of the wood piece.
A block of wood is floating on water with its dimensions 50 cm x 50 cm x 50 cm inside water. Calculate the buoyant force acting on the block. Take g = 9.8 N kg-1.
A balloon filled with helium gas floats in a big closed jar which is connected to an evacuating pump. What will be your observation, if air from the jar is pumped out? Explain your answer.
Select the correct option:
The phenomenon due to which a solid experiences upward force when immersed in water is called:
Is pressure a vector quantity?
