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It is easier to lift a heavy stone under...

It is easier to lift a heavy stone under water than in air. Explain.

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Upthrust in water `gt` Upthrust in air
So, apparent weight in water `lt` apparent weight in air.
So, it is easier to lift a heavy stone under water than in air because in water.
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ICSE-FLUIDS-TOPIC 2 (2 Marks Questions )
  1. A body experiences an upthrust F(1) in river water and F(2) in sea wat...

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  2. How does the density of material of a body determine whether it will f...

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  3. It is easier to lift a heavy stone under water than in air. Explain.

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  4. Calculate the mass of a body whose volume is 2 m^3and relative density...

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  5. A body is volume 100cm^(3) weighs 5 kgf in air. It is completely immer...

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  6. A body is volume 100cm^(3) weighs 5 kgf in air. It is completely immer...

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  7. A body weighs 450 gf in air and 310 gf when completely immersed in wat...

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  8. A body weighs 450 gf in air and 310 gf when completely immersed in wat...

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  9. A body weighs 450 gf in air and 310 gf when completely immersed in wat...

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  10. What is meant by the term buoyancy?

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  11. What is the cause of upthrust? At which point it can be considered to ...

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  12. A man first swims in sea water and then in river water. (i) compare ...

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  13. Will a body weigh more in air or in vacuum when weiged with a spring b...

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  14. a metal solid cylinder tied ot a thread is hanging from the hook of a ...

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  15. What is the unit of relative density?

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  16. State the principle of floatation.

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  17. A body held completely immersed inside a liquid experiences two forces...

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  18. When a piece of wood is suspended from the hook of a spring balance, i...

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  19. What is the centre of buoyancy? State its position for a floating body...

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  20. A nail sinks in water whereas it floats on mercury.

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