Advertisements
Advertisements
प्रश्न
Name the force which makes heavy objects appear light when immersed in a liquid.
Advertisements
उत्तर
Buoyant force is the force that makes heavy objects appear light when immersed in a liquid.
APPEARS IN
संबंधित प्रश्न
For a given object, the buoyant force in liquids of different ______ is ______.
State the laws of liquid pressure.
A tall vertical cylinder filled with water is kept on a horizontal table top. Two small holes A and B are made on the wall of the cylinder, A near the middle and B just Below the free surface of water. State and explain your observation.
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.
Why is a force needed to keep a block of wood inside water?
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.
What is the centre of buoyancy? State its position for a floating body with respect to the centre of gravity of the body.
In a fluid, buoyant force exists because the pressure at the ______ of an object is greater than the pressure at the top.
Salt water provides less buoyant force than freshwater.
What do you understand by the term “Buoyancy”.
