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A piece of iron sinks in water, but a sl...

A piece of iron sinks in water, but a slip made of iron floats in water. Why?

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An iron nail sinks in water because density of iron is more than the density of water, so the weight of the nail is more than the upthrust of water on it. Ship is also made of iron and hollow. The hollow space is filled with air. Thus its average density becomes less than that of water. The weight of water displaced by the submerged part of ship can balance the total weight of ship and it floats.
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ICSE-FLUIDS-TOPIC 2 (2 Marks Questions )
  1. What is the centre of buoyancy? State its position for a floating body...

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

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

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  4. A piece of ice is floating in a glass vessel filled with water. How wi...

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  5. Explain the following observation: "Icebergs floating in sea are dange...

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  6. Explain the following: An egg sinks in fresh water, but floats in a s...

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  7. Explain the following: A toy balloon filled with hydrogen rises to th...

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

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

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

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  11. A body of volume V and density PS, floats with volume v inside a liqui...

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  12. The density of iron is 7.8xx 10^3 "kg m"^(-3) What is its relative de...

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  13. The density of iron is 7800 "kg m"^(-3) . What do you understand by t...

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  14. The relative density of silver is 10.8. Find its density.

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  15. Calculate the mass of air in a room of dimensions 4.5 m x 3.5 m x 2.5 ...

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  16. A piece of stone of mass 113 g sinks to the bottom in water contained ...

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  17. A solid iron ball of mass 500 g is dropped in mercury contained in a b...

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  18. A solid iron ball of mass 500 g is dropped in mercury contained in a b...

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  19. A piece of wax floats in brine. What fraction of its volume will be im...

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  20. If the density of ice is 0.9gcm^(-3), what portion of an iceberg will ...

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