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Why does a boat float? |
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A boat floats because it is lighter than the amount of water it 'displaces' A simple test is to make a aluminium foil boat, 30cm by 30cm (12" by 12") by get the square and folding each side up about 2 cm (1") so water doesn't wash over. Put in the water and it will take up and area of water 26cm by 26cm which is 676 square cm of water. Puts some coins in to make it heavier and it will still float.
Now keeping the coins in the foil squash it into a ball. to make the calculation easier and lets just say it was sqashed in a cube 3cm x 3cm x 3cm. It now takes up 27 square cm of water. It is now heavier than the amount water it 'displaced' which was 676 square cm when it was flat.
First answer by Fearlessfly. Last edit by Fearlessfly. Contributor trust: 9 [recommend contributor]. Question popularity: 5 [recommend question]
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