Question

it is difficult tu pull a rubber suckrr pressed on a surface give reason

Answer 1

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Answer 2

This is due to ATMOSPHERIC PRESSURE.

When a rubber suckrr is pressed against a surface , the air inside it is pushed out creating a vacuum.

Then the atmosphere applies pressure and pushes and sticks the suckrr firmly against the surface.

Therefore a high energy is required to overcome the atmospheric pressure.



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