Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
The surface of the incline is smoother than anticipated.
B
The weight of the block has increased significantly.
C
The incline angle has become steeper.
D
The block is made of a denser material.
Understanding the Answer
Let's break down why this is correct
Answer
If the wood slides more easily than you expected, the most common reason is that the friction coefficient between the wood and the incline is smaller than you thought. This can happen when the incline surface is smoother or has been lubricated, or when the wood’s surface has been cleaned or coated so that it is less rough. Because friction is proportional to the normal force and the coefficient, a lower coefficient lets the block accelerate faster down the slope. For example, if you polish the wooden board before sliding it, the board will glide more smoothly than a rough, unpolished board, showing a lower friction force.
Detailed Explanation
A smoother surface has fewer bumps that the wood can grip. Other options are incorrect because Some students think that a heavier block slides easier because it feels heavier; Increasing the angle makes the block feel like it is falling faster, but it does not change how the surfaces touch.
Key Concepts
Friction Coefficient
Surface Roughness
Incline Dynamics
Topic
Friction Coefficient Variations
Difficulty
medium level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1When a block of wood is resting on a concrete surface, which factor primarily influences the maximum static friction that can be exerted before the block starts to slide?
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2
Question 2If an object is sliding down an inclined plane and begins to slow down, what is the underlying cause of this deceleration?
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Practice
3
Question 3If a block is sliding down an inclined plane, how does the frictional force behave compared to the gravitational force acting parallel to the incline?
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