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प्रश्न
What is the scientific name of the 'upward force' acting on an object immersed in a liquid?
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उत्तर
Buoyant force or upthrust is the scientific term for the upward force acting on an object immersed in a liquid.
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संबंधित प्रश्न
Fill in the blank with suitable word :
It is the................. force which makes objects appear lighter in water.
A body experiences the same buoyant force while floating in water or alcohol.
Which of the following will sink or float on water? (Density of water = 1 g Cm-3)
(a) body A having density of 500 kg m-3
How does the liquid pressure on a diver change if:
the diver moves to the greater depth
What do you understand by the term upthrust of a fluid? Describe an experiment to show its existence.
A body experiences an upthrust F1 in river water and F2 in sea water when dipped up to the same level. Which is more, F1 or F2? Give reason.
You are provided with a hollow iron ball A of volume 15 cm3 and mass 12 g and a solid iron ball B of mass 12 g. Both are placed on the surface of water contained in a large tub.
- Find upthrust on each ball.
- Which ball will sink? Give a reason for your answer (Density of iron = 8.0 g cm-3)
A homogeneous block floats on water (a) partly immersed (b) completely immersed. In each case state the position of centre of buoyancy B with respect to the centre of gravity G of the block.
What is the centre of buoyancy? State its position for a floating body with respect to the centre of gravity of the body.
Write about buoyant force.
