Advertisements
Advertisements
प्रश्न
A body weighs 450 gf in air and 310 gf when completely immersed in water. Find
(i) The volume of the body,
(ii) The loss in weight of the body, and
(iii) The upthrust on the body.
State the assumption made in part (i).
Advertisements
उत्तर
Weight of body in air = 450 gf
Weight of body in water = 310 gf
(i) Volume of the body = Loss in weight × density of water
= (450 - 310) × 1 [Assumption : density of water = `1 "g cm"^-3`]
= 140 `"cm"^3`
(ii) Loss in weight = Weight of body in air - Weight of body water
= (450 - 310) gf
= 140 gf
(iii) Upthrust on body = loss in weight = 140 gf
APPEARS IN
संबंधित प्रश्न
What is meant by the term ‘buoyancy’ ?
The density of a body which sinks in water is ......... than 1000 Kg m-3.
If a fresh egg is put into a beaker filled with water, it sinks. On dissolving a lot of salt in the water, the egg begins to rise and then floats. Why ?
Name the S.I. unit of density. How is it related to g Cm-3?
The density of brass is 8.4 g cm-3. What do you mean by this statement?
For a floating body, how is its weight related to the buoyant force?
How does the pressure exerted by a solid and fluid differ?
Complete the following sentence :
Pressure of a liquid at a given depth is .................. To the density of the liquid.
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.
Select the correct option:
The phenomenon due to which a solid experiences upward force when immersed in water is called:
