Question

A pencil eraser loses tiny pieces of rubber each time you use it.Why does this happen?

Answer 1

The force of friction between the eraser and paper brings about wear and tear of the eraser and it turns into minor pieces.

It is because of the aggravations which are made by you or any framework related with it. When you rub it the particles confront a gigantic measure of the drive which makes atoms bend or move toward the path inverse to the connected force as it is caused by the unsettling influences and inconsistencies inside the structures. In this manner we see atoms tearing divided with each other because of inertia.