A Question from test: related from friction.

In summary, the conversation is about determining the correct explanation for stopping a bicycle in the shortest distance on a horizontal road. Statement 1 states that one should apply the brakes hard enough to just prevent slipping, while statement 2 says that limiting friction is always greater than kinetic friction. The options provided are A) both statements are correct and statement 2 is a correct explanation for statement 1, B) both statements are correct but statement 2 is not a correct explanation for statement 1, C) statement 1 is correct but statement 2 is incorrect, and D) statement 1 is incorrect but statement 2 is correct. After analyzing the statements, it can be concluded that D) statement 1 is incorrect and statement 2
  • #1
kukki1990
5
0
1.Homework Statement
Question: Statement 1: In order to stop a bicycle in shortest distance on a horizontal road, one should apply the breaks hard enough to just prevent slipping

Statement 2: Limiting friction is always greater than the kinetic friction between any two bodies.

(A) Statement 1 is correct ; statement 2 is correct ; Statement 2 is a correct explanation for statement 1

(B) Statement 1 is correct ; statement 2 is correct ; Statement 2 is not a correct explanation for statement 1

(C) Statement 1 is correct ; statement 2 is Incorrect

(D) Statement 1 is Incorrect ; statement 2 is correct The question is from a test, which is the right option i think D is right ans but the ans key says A is correct. So is it correct?
 
Physics news on Phys.org
  • #2
2.Homework Equations Friction = μ *Normal force3.The Attempt at a SolutionI think D is the right answer as limiting friction is greater than kinetic friction, but this does not explain why one should apply brakes hard enough to just prevent slipping. The brakes are applied to generate a frictional force which oppose the motion of bicycle and bring it to rest. So, statement 2 does not explain statement 1. Therefore, D is the correct option.
 
  • #3


I cannot provide a definite answer without further context or information about the test. However, based on the information provided, my understanding is that statement 1 is correct and statement 2 is also correct, but statement 2 does not directly explain or provide a reason for statement 1. Therefore, option B would be the most accurate answer. It is important to note that in science, it is always important to critically evaluate and question information and results, rather than simply relying on answer keys.
 

1. What is friction?

Friction is the force that resists the relative motion between two surfaces in contact.

2. How is friction related to tests?

Friction is often measured and tested in various experiments and studies as it plays a crucial role in many physical systems.

3. What factors affect friction?

The amount of friction between two surfaces is affected by factors such as the nature of the surfaces, the force pressing the surfaces together, and the speed at which the surfaces move against each other.

4. What are the different types of friction?

The three main types of friction are static friction, kinetic friction, and rolling friction.

5. How is friction important in everyday life?

Friction is essential in many aspects of everyday life, such as walking, driving, and even writing. It also helps to prevent objects from slipping or sliding and enables the functioning of machines and equipment.

Similar threads

  • Introductory Physics Homework Help
Replies
20
Views
1K
  • Introductory Physics Homework Help
Replies
18
Views
1K
  • Introductory Physics Homework Help
Replies
1
Views
3K
  • Introductory Physics Homework Help
Replies
8
Views
856
  • Introductory Physics Homework Help
Replies
13
Views
782
  • Introductory Physics Homework Help
Replies
1
Views
764
Replies
29
Views
1K
  • Introductory Physics Homework Help
Replies
6
Views
890
  • Introductory Physics Homework Help
Replies
14
Views
1K
  • Introductory Physics Homework Help
Replies
2
Views
549
Back
Top