Iron needle sinks in water whereas a ship made of iron floats
An iron needle sinks in water whereas a ship made of iron floats on it because
- The edge of the needle is pointed
- The ship is flat
- The ship is driven by powerful engine
- The specific gravity of the needle is greater than that of water displaced by it
Answer: The specific gravity of the needle is greater than that of water displaced by it
An iron needle sinks in water whereas a ship made of iron floats on it because the specific gravity (relative density) of the needle is greater than that of water displaced by it.
Objects with a density lower than water float, whereas objects having a higher density than water sink. The average density of iron needle is greater than water, therefore, it sinks. On the other hand, the ship is hollow and the empty space contains air which makes the average density of the ship less than that of water and hence it floats.
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