Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
The car can start moving easily without slipping.
B
The car cannot start moving at all.
C
The car will skid immediately upon acceleration.
D
The car will move backwards instead of forwards.
Understanding the Answer
Let's break down why this is correct
Answer
The coefficient of static friction of 0. 7 means the maximum frictional force that the tires can generate before sliding is 0. 7 times the normal force from the car’s weight. If the force needed to start the car moving is less than this maximum, the tires will grip the road and the car will accelerate. For example, a 1500‑kg car has a normal force of about 14700 N, so the maximum static friction force is about 0.
Detailed Explanation
A coefficient of 0.7 means the tires have strong grip. Other options are incorrect because One might think that a high static friction makes it impossible to move because the tires are stuck; High static friction does not cause immediate skidding.
Key Concepts
Coefficient of Friction
Topic
Friction Behavior Demonstration
Difficulty
easy level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1If a car with a mass of 1,200 kg is moving on a road with a coefficient of kinetic friction of 0.6, what is the maximum deceleration the car can achieve before skidding?
mediumPhysics
Practice
2
Question 2When measuring the frictional forces between a rubber tire and a wet road, how would the static and kinetic friction coefficients likely compare if the temperature of the tire increases due to prolonged braking?
hardPhysics
Practice
3
Question 3If the friction coefficient between two surfaces is 0.3, what does this imply about the forces involved?
easyPhysics
Practice
4
Question 4If 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?
easyPhysics
Practice
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