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alisoncheng11

What is the principle of a sucker?

  • 3 years ago
  • 3 years ago

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

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

    • 2 years ago
  4. ac7qz
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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.

    • 2 years ago
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spraguer (Moderator)
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