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alisoncheng11

  • 5 years ago

What is the principle of a sucker?

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  1. alisoncheng11
    • 5 years ago
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    Why can suckers be hold on walls tightly without falling down to the ground?

  2. stan
    • 5 years ago
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    When you press on it, you force all the air out. This means that there in now a pressure of 1 atmosphere pressing from the outside.

  3. MorbidTaste
    • 5 years ago
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    wow this is quite curious question! How can they suck the blood from animals?

  4. ac7qz
    • 4 years ago
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    We say "suction cup"... Stan is right; the other part of the answer is that max static friction is equal to mu N, and N is the atmospheric force on the outside of the suction cup.

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