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प्रश्न
What is meant by up thrust?
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उत्तर
The upward force which any liquid exerts upon a body placed in it is called the upthrust.
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संबंधित प्रश्न
Distinguish between density and relative density.
Explain the following statement:
It is easier to cut with a sharp knife than with a blunt one.
How does the pressure exerted by a solid and fluid differ?
- Calculate the height of a water column which will exert on its base the same pressure as the 70 cm column of mercury. Density of mercury is 13.6 g cm-3.
- Will the height of the water column in part (a) change if the cross-section of the water column is made wider?
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).
You are provided with a hollow iron ball A of volume 15 cm3 and mass 12 g and a solid iron ball B of mass 12 g. Both are placed on the surface of water contained in a large tub.
- Find upthrust on each ball.
- Which ball will sink? Give a reason for your answer (Density of iron = 8.0 g cm-3)
A beaker contains a liquid of density ‘ρ’ up to height ‘h’ such that ‘PA’ is atmospheric pressure and ‘g’ is the acceleration due to gravity. Answer the following questions:
- What is the pressure on the free surface of the liquid?
- What is the pressure on the base of the beaker?
- What is the lateral pressure at the base on the inner walls of the beaker?
Write the SI units of Buoyant force
Is thrust a scalar or vector quantity?
The center of gravity of the floating body and the center of buoyance are in the same ______ line.
