Question

Friction coefficient between two surfaces depends on

4 points

A) Normal reaction

B) Roughness of surface

C) Force on body

D) None of these

​

Answer 1

Answer:

$\huge{\mathcal{\purple{A}\green{N}\pink{S}\blue{W}\purple{E}\green{R}\pink{!}}}$

B) Roughness of surface.

ADDTIONAL INFORMATION

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• What is friction ?

-> The force which opposes the state of motion is called frition.

• Friction is contact force.

• It depends on the irregularities of the substance.

• Types of friction

Static friction - friction acts in an object which just strat.

Sliding friction - friction acts in an object which slids on the surface

Rolling friction - when friction acts on an object which is rolling .

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