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प्रश्न
What do you mean by buoyancy?
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उत्तर
All liquid exerts a upward force on the body placed in it. This Phenomenon is called buoyancy.
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संबंधित प्रश्न
A body experiences the same buoyant force while floating in water or alcohol.
A body floats in a liquid when its weight becomes equal to the weight of the liquid displaced by its submerged part.
What happens to the buoyant force as more and more volume of a solid object is immersed in a liquid ? When does the buoyant force become maximum ?
The density of brass is 8.4 g cm-3. What do you mean by this statement?
Explain the following statement:
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(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).
Two cylindrical vessels fitted with pistons A and B of area of cross-section 8 cm2 and 320 cm2 respectively are joined at their bottom by a tube and they are completely filled with water. When a mass of 4 kg is placed on piston A, Find:
- the pressure on piston A,
- the pressure on piston B, and
- the thrust on piston B.
Select the correct option.
Unit of thrust in the SI system is
Select the correct option.
Thrust acting perpendicularly on the unit surface area is called
Higher Order Thinking Skill.
How does a fish manage to rise up and move down in water?
