When a small rubber cup is pressed hard on a smooth plane surface, it sticks to it. Give reason.

Asked by Topperlearning User | 19th Aug, 2014, 09:03: AM

Expert Answer:

The small rubber cup sticks to the surface because most the air between the cup and the surface escapes out ,hence the pressure inside decreases while the outer pressure which is more, acts on it.

Answered by  | 19th Aug, 2014, 11:03: AM