Q&A/Class 8/Science

Why the sucker sticks to the surface over which it is pressed?

Class 8CBSEScienceChapter: Force and Pressure
πŸ‘ 9 viewsπŸ‘ 0 helpful
When we press the sucker, most of the air between its cup and the surface escapes out. The sucker sticks to the surface because pressure of atmosphere acts on it. To pull the sucker off the surface, the applied force should be large enough to overcome the atmospheric pressure.
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