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प्रश्न
The S.I. unit of upthrust is :
पर्याय
Pa
N
kg
kg m2
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उत्तर
The S.I. unit of upthrust is : N
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संबंधित प्रश्न
Relative density of a substance is expressed in g cm-3.
Why does a piece of ice float on water?
How does the pressure exerted by thrust depend on the area of surface on which it acts? Explain with a suitable example.
A hammer exerts a force of 1.5 N on each of the two nails A and B. The area of cross section of tip of nail A is 2 mm2 while that of nail B is 6 mm2. Calculate pressure on each nail in pascal.
(i) The diameter of neck and bottom of a bottle are 2 cm and 10 cm, respectively. The bottle is completely filled with oil. If the cork in the neck is pressed in with a force of 1.2 kgf, what force is exerted on the bottom of the bottle?
(ii) Name the law/principle you have used to find the force in part (a).
Complete the following sentence :
Two balls, one of iron and the other of aluminium experience the same upthrust when dipped completely in water if _____________ .
A block of wood is floating on water with its dimensions 50 cm x 50 cm x 50 cm inside water. Calculate the buoyant force acting on the block. Take g = 9.8 N kg-1.
Two identical pieces, one of ice (density = 900kg per meter cube) and other wood (density = 300kg per meter cube) float on water.
- Which of the two will have more volume submerged inside water
- Which of two will experience more upthrust due to water.
The upward force that is caused due to the pressure difference in liquid (or fluid) is called ______.
