PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoTake a good quality rubber sucker. It looks like a small rubber cup. Press it hard on a smooth plane surface. Does it stick to the surface? Now try to pull it off the surface. Can you do it?
a. The majority of the air between the sucker's cup and the surface as we press it.
b. The applied force must be sufficiently strong to overcome in order to lift the sucker off the surface.
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