What is the effect of increasing the surface roughness on the coefficient of fri
Practice Questions
Q1
What is the effect of increasing the surface roughness on the coefficient of friction?
Increases
Decreases
No effect
Depends on the material
Questions & Step-by-Step Solutions
What is the effect of increasing the surface roughness on the coefficient of friction?
Correct Answer: Increasing surface roughness increases the coefficient of friction.
Step 1: Understand what surface roughness means. It refers to the texture of a surface, whether it is smooth or has bumps and grooves.
Step 2: Know what the coefficient of friction is. It is a number that represents how easily one surface can slide over another.
Step 3: Realize that when a surface is rough, it has more bumps and grooves.
Step 4: Understand that these bumps and grooves can catch on each other when two surfaces are in contact.
Step 5: Recognize that this catching creates more resistance to sliding, which means more friction.
Step 6: Conclude that as surface roughness increases, the coefficient of friction also increases because of the greater interlocking between the surfaces.
