Question

what is the common between fraction and the area of the surface in contrect with each other​

Answer 1

Explanation:

The force due to friction is generally independent of the contact area between the two surfaces. ... Note that this relationship breaks down when the surface area gets too small, since then the coefficient of friction increases because the object may begin to dig into the surface.

If any surface has large number of irregularities i.e. hills and valley then the surface will obtain good bearing properties. Rate of wear is proportional to the load per unit area and surface area in contact.

Answer 2

Answer:

area and surface area is that area is used to describe the space occupied by a two-dimensional shape, whereas, surface area is the area occupied by the outer surface of a three-dimensional shape