Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
The normal force acting on the block
B
The color of the concrete surface
C
The temperature of the wood
D
The weight of the block in air
Understanding the Answer
Let's break down why this is correct
Answer
The maximum static friction that can act on a wood block on concrete depends mainly on the coefficient of static friction between the wood and the concrete surface. This coefficient tells how easily the two materials stick together. The friction force equals this coefficient times the normal force (the weight of the block), so a higher coefficient means more friction before sliding starts. For example, if the coefficient is 0. 4 and the block weighs 10 N, the maximum static friction is 0.
Detailed Explanation
Static friction is the force that keeps an object from moving. Other options are incorrect because Some think the floor’s color changes friction, but color only shows paint or dirt; People sometimes think a colder wood would grip better, but temperature mainly changes material softness, not the friction between wood and concrete.
Key Concepts
Normal Force
Material Pairing
Topic
Friction Coefficient Calculations
Difficulty
medium level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1When a smooth metal block is placed on a rough surface, how does the surface roughness affect the normal force required to maintain static equilibrium before the block begins to slide?
mediumPhysics
Practice
2
Question 2If a block of wood slides down an incline and experiences lower friction than expected, what could be a likely cause for this observation?
mediumPhysics
Practice
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