Question

Select the factors on which friction depends?

• A. Materials of the bodies in contact
• B. Roughness of the surfaces in contact
• C. Mass of the objects
• D. Amount of surface area in contact between the moving bodies

Answer 1

Answer: (A), (B), (C)

The correct options are
A Materials of the bodies in contact
B Roughness of the surfaces in contact
C Mass of the objects

The force depends on following factors:-
i) Material of the bodies in contact
ii) Roughness of the surface in contact
iii) The mass of an object.

It is independent of the amount of surface area in contact.