Advertisements
Advertisements
प्रश्न
For a floating body, how is its weight related to the buoyant force?
Advertisements
उत्तर
When a body floats in a liquid. The weight of the liquid displaced by its immersed part is equal to the total weight of the body.
APPEARS IN
संबंधित प्रश्न
What is the scientific name of the 'upward force' acting on an object immersed in a liquid?
Why do we feel light on our feet when standing in a swimming pool with water up to our armpits ?
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.
What do you understand by the term upthrust of a fluid? Describe an experiment to show its existence.
A piece of wood if left under water comes to the surface. Explain the reason.
Will a body weigh more in air or vacuum when weighed with a spring balance? Give a reason for your answer.
A body will experience minimum upthrust when it is completely immersed in :
Two spheres A and B, each of volume 100 cm3 is placed on water (density = 1.0 g cm−3). The sphere A is made of wood of density 0.3 g cm−3 and sphere B is made of iron of density 8.9 g cm−3.
- Find:
- The weight of each sphere, and
- The upthrust on each sphere.
- Which sphere will float? Give reason.
The magnitude of buoyant force acting on an object immersed in a liquid depends on ______ of the liquid.
Icebergs and ships stay afloat due to ______.
