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Understanding common observations

A) Very often a sinking ship will turn over as it becomes immersed in water. Why?

B) Is it true that a floating object will only be in stable equilibrium if its centre of buoyancy lies above its centre of gravity?

C) Why should one take short steps rather than long ones when walking on ice?

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A) In a floating ship, the centre of gravity of the ship is low, and the meta centre is above the centre of gravity.
When the ship takes in water while sinking, its centre of gravity is raised owing to the intake of water, so that the meta centre becomes lower than the centre of gravity. The moment of the ...

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