Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
The frictional force is equal to the normal force.
B
The frictional force is 30% of the normal force.
C
The normal force is greater than the frictional force.
D
The frictional force is independent of the normal force.
Understanding the Answer
Let's break down why this is correct
Answer
A friction coefficient of 0. 3 means that the largest friction force that can act between the two surfaces is 30 % of the normal force pressing them together. In other words, the maximum friction force equals μ times the normal force (F_friction = 0. 3 × N). This tells you how much resistance the surfaces give to sliding: the higher the coefficient, the greater the friction.
Detailed Explanation
The coefficient tells us how much friction is compared to the force pressing the surfaces together. Other options are incorrect because People sometimes think the two forces are the same because they are connected, but the coefficient limits how much friction can be made; While the normal force is usually larger, saying the normal force is always greater ignores the coefficient.
Key Concepts
Friction Coefficient
Normal Force
Frictional Force
Topic
Friction Coefficient Calculations
Difficulty
easy level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1How does the texture of a surface influence the amount of friction experienced when two materials are in contact with each other?
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Question 2Which of the following statements best describes how increasing the normal force affects the frictional force between two surfaces in contact?
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3
Question 3If a car is moving on a road and the coefficient of static friction between the tires and the surface is 0.7, what does this value indicate about the car's ability to start moving?
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4
Question 4How does surface roughness influence the frictional interaction between two materials?
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5
Question 5How does increasing surface roughness affect the friction coefficient between two sliding surfaces?
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Question 6Surface roughness:Coefficient of friction :: Surface area:?
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7
Question 7The friction coefficient is defined as the ratio of the frictional force to the ______ acting on an object.
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8
Question 8If an object is resting on a surface and begins to slide at a weight of 270 grams, what can you infer about the static friction coefficient between the object and the surface?
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