Question

select all that apply
which are factors that affect the frictional force between two surfaces that are moving against each other?
□ the magnitude of the normal force acting between the two surfaces
□ the speed with which the two surfaces move past each other
□ the texture of the surfaces in contact with each other
□ the materials that make up the surfaces

Explanation:

The formula for frictional force \( F_f=\mu F_N \), where \( \mu \) (coefficient of friction, related to texture and materials of surfaces) and \( F_N \) (normal force) are factors. Speed does not affect frictional force for dry friction (Coulomb friction).

Answer:

• the magnitude of the normal force acting between the two surfaces
• the texture of the surfaces in contact with each other
• the materials that make up the surfaces