Advertisements
Advertisements
प्रश्न
In what direction does the buoyant force on an object immersed in a liquid act?
Advertisements
उत्तर
An object immersed in a liquid experiences buoyant force in the upward direction.
APPEARS IN
संबंधित प्रश्न
What do you mean by buoyancy?
A body experiences the same buoyant force while floating in water or alcohol.
Describe an experiment to determine the density of the material of a coin.
The diagram given below show a body floating in three different liquids. A, B and C at different levels.
(a) In which liquid does the body experience the greatest buoyant force?
(b) Which liquid has the least density?
(c) Which liquid has the highest density?

Define the term thrust. State its S.I. unit.
The pressure of water on the ground floor is 40,000 Pa and on the first floor is 10,000 Pa. Find the height of the first floor. (Take : density of water = 1000 kg m-3, g = 10 m s-2)
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.
A small block of wood is completely immersed in (i) water, (ii) glycerine and then released. In each case, What do you observe? Explain the difference in your observation in the two cases.
Complete the following sentence.
Mass = .................... × density
Icebergs and ships stay afloat due to ______.
