Gravity
Snemalna Knjiga Besedilo
- A boat starts with 10 persons on board
- Hey! I think it's about to rain heavily
- This is the last trip for the day ...let me take all in the same trip
- Max 4 to 6 persons
- And it starts raining heavily
- Max 4 to 6 persons
- The boat suddenly overturns and sinks into the sea
- Luckily another ship which was nearby saved them.
- Please help us. Our boat sank into the sea.
- Later someone asks the captain.
- Why did our boat sink but yours didn't?
- That is because objects like boats and ships can carry only a limited amount of mass without sinking. If this amount is exceeded then the object will sink.
- THE SCIENCE BEHIND...
- Density is defined as mass per unit volume.When the upthrust of water is greater than the density of the object,the object will float. But when the density is more than upthrust of water, the object sinks.Therefore objects with density less than water will float in it. As the density in your boat increased due to large number of people,it sank.
- Therefore while some objects float in water others sink.
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