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Gravitation — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceGravitation2 Marks
Question
On what principle are submarines based?
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Answer

The submarine works very differently than other crafts. It operates using the principle of buoyancy by Archimedes which says that upward buoyant force acting on a body that is fully or partially immersed in the liquid is equal to the weight of the fluid displaced by the body.

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