What does the air pressure experiment …
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Meghna Thapar 5 years, 7 months ago
The pressure exerted by air around us is known as atmospheric pressure.
Take a good quality rubber sucker. It looks like a small rubber cup. Press it hard on a smooth plane surface. When we press the sucker, most of the air between its cup and the surface escapes out. The sucker sticks to the surface because the 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. This activity shows the magnitude of atmospheric pressure.
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