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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 meant by the term ‘buoyancy’ ?
Why do we feel light on our feet when standing in a swimming pool with water up to our armpits ?
When a boat is partially immersed in water, it displaces 600 kg of water. How much is the buoyant force acting on the boat in newtons ? (g = 10 m s-2)
Explain the meaning of the statement
‘Relative density of aluminium is 2.7’.
Explain the following statement:
It is easier to cut with a sharp knife than with a blunt one.
How does the liquid pressure on a diver change if :
The diver moves horizontally?
(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).
Most buoyant objects are those with relatively ______.
- high volume
- higher mass
- low density
- less viscosity
