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प्रश्न
A body experiences an upthrust F1 in river water and F2 in sea water when dipped up to the same level. Which is more, F1 or F2? Give reason.
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उत्तर
F2 > F1; Sea water is denser than river water; therefore, the upthrust due to sea water will be greater than that due to river water at the same level. This shall make the body to appear lighter in the sea water.
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संबंधित प्रश्न
State whether the following statement is true or false :
The buoyant force depends on the nature of object immersed in the liquid
What is meant by the term ‘buoyancy’ ?
Fill in the blank with suitable word :
It is the................. force which makes objects appear lighter in water.
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‘Relative density of aluminium is 2.7’.
Why does a piece of ice float on water?
Complete the following sentence :
Pressure is .................... in all directions about a point in a liquid.
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.
- 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.
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Higher Order Thinking Skill.
How does a fish manage to rise up and move down in water?
If the buoyant force is less, the object will float.
