Question

What is a rubber sucker ? How does it work ? State any one use of a rubber sucker.

Answer 1

Rubber sucker works due.to air pressure. When a rubber sucker is pressed on a surface , the air inside the sucker is pushed out thus reducing the air pressure inside the sucker. As the air pressure outside the sucker is more it pushes the sucker and keep it stuck to its place.
A rubber sucker looks like a small, concave – shaped rubber cup.

A rubber sucker is also called a suction Cup because it sticks to a surface by suction.When we press the rubber sucker on a flat ,smooth, surface , its concave rubber cup gets flattened to a large extent, pushing out most of the air from beneath it.