Question

It is difficult to pull a rubber suckrr pressed on a surface. Give reason​ . Please help

Answer 1

Answer:

This is because as the air escapes the cup, the atmospheric pressure is created, making it hard to pull off the surface.

Answer 2

Answer:

There is less air pressure inside with respect to air pressure outside, so outside air pressure pushes the surfaces of rubber suckr towards the surface it is pressed, so making it difficult to pull it.

Hope it helps you.....