Question

Frictional forces occur between two surfaces in contact, when one slides or tends to slide. Which factors influence frictional forces?
A. materials that strongly interact
B. surface quality and surface finish
C. total surface area
D. nature of the two surface areas

• A. (A), (B) and (D) only
• B. (A), (B) and (C) only
• C. (B), (C) and (D) only
• D. (A), (B) and (E) only

Hint:

Friction is influenced by the texture and material properties of surfaces, and their total surface area.

Answer 1

The Correct Option is A

Friction depends on surface roughness (quality) and surface material properties (nature of the materials). It does not depend on the total surface area.