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A man first swims in sea water and then ...

A man first swims in sea water and then in river water.
(i) compare the weights of sea water and river water displaced by him.
(ii) Where does he find it easier to swim and why?

Text Solution

Verified by Experts

The density of sea water is more than the density of river water. So, by displacing less amount of water, the weight of the man is balanced by the upthrust generated. So, he finds easier to swim in sea water.
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ICSE-FLUIDS-TOPIC 2 (2 Marks Questions )
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  2. What is the cause of upthrust? At which point it can be considered to ...

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

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

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  6. What is the unit of relative density?

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  7. State the principle of floatation.

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

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

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

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

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  12. A piece of iron sinks in water, but a slip made of iron floats in wate...

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  17. Explain the following: As a ship in harbour is being unloaded, it slo...

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  18. A block of wood is so loaded that it just floats in water at room temp...

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