When a rubber balloon held between the hands is pressed, its shape changes. This happens because :

Let us stretch a rubber band. Is there a change in its shape?

Let us stretch a rubber band. Is there a change in its shape?

Let us stretch a rubber band. Is there a change in its shape?

Let us stretch a rubber band. Is there a change in its shape?

When a rubber cord is streched, the changed in volume in neglible compared to the change in its linear dimension. Then Posisson's ratio for rubber is

When a rubber cord is stretched, the change in volume with respect to change in its linear dimensions is negligible. The Poisson's ratio for rubber is

(a) What do you understand by the terms "balanced forces" and "unbalanced forces" ? Explain with examples. (b) What types of forces-balanced or unbalanced-act on a rubber ball when we press it between our hands ? What effect is produced in the ball ?

A rubber ball changes its shape on pressing. Can it be called a solid?