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Please help me!! Why does a plastic balloon float but a plastic ball does not float?
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3 votes
Please help me!!
Why does a plastic balloon float but a plastic ball does not float?

User Shlomo Zalman Heigh
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1 Answer

5 votes

Answer:

The cup will sink if and only if the total downward force pushing on all its upward facing surfaces, plus its own weight, is stronger than the total upward force pushing on its downward facing surfaces.

User Kaushik Vatsa
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