Civil Engineering (CE) Exam  >  Civil Engineering (CE) Questions  >  A block of weight 30 N is in motion due to su... Start Learning for Free
A block of weight 30 N is in motion due to sufficient large magnitude of force and the coefficient of static and dynamic coefficient of friction are magnitude 0.4 and 0.3 respectively. What is maximum magnitude of frictional force applied by ground to block?
  • a)
    9 N
  • b)
    2.8 N
  • c)
    6.3 N
  • d)
    4N
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A block of weight 30 N is in motion due to sufficient large magnitude ...
Given:
Weight of the block (W) = 30 N
Coefficient of static friction (μs) = 0.4
Coefficient of dynamic friction (μd) = 0.3

To find:
Maximum magnitude of frictional force applied by the ground to the block.

Explanation:
The maximum magnitude of frictional force can be determined by using the equation:

Ffriction ≤ μs * N

Where,
Ffriction is the magnitude of the frictional force,
μs is the coefficient of static friction, and
N is the normal force applied by the ground to the block.

Step 1: Calculate the normal force (N)
The normal force is the force exerted by a surface to support the weight of an object resting on it. In this case, the normal force is equal to the weight of the block.

N = W = 30 N

Step 2: Calculate the maximum magnitude of frictional force (Ffriction)
Using the equation Ffriction ≤ μs * N, we can substitute the given values:

Ffriction ≤ 0.4 * 30 N
Ffriction ≤ 12 N

Therefore, the maximum magnitude of frictional force applied by the ground to the block is 12 N.

Conclusion:
The maximum magnitude of frictional force applied by the ground to the block is 12 N. Option A (9 N) is incorrect.
Free Test
Community Answer
A block of weight 30 N is in motion due to sufficient large magnitude ...
As given in question, block is in condition of motion. So, the dynamic coefficient of friction will provide frictional force to block from ground which can be calculated as,
f.fmax= 0.3*30 = 9 N
Explore Courses for Civil Engineering (CE) exam

Top Courses for Civil Engineering (CE)

A block of weight 30 N is in motion due to sufficient large magnitude of force and the coefficient of static and dynamic coefficient of friction are magnitude 0.4 and 0.3 respectively. What is maximum magnitude of frictional force applied by ground to block?a)9 Nb)2.8 Nc)6.3 Nd)4NCorrect answer is option 'A'. Can you explain this answer?
Question Description
A block of weight 30 N is in motion due to sufficient large magnitude of force and the coefficient of static and dynamic coefficient of friction are magnitude 0.4 and 0.3 respectively. What is maximum magnitude of frictional force applied by ground to block?a)9 Nb)2.8 Nc)6.3 Nd)4NCorrect answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about A block of weight 30 N is in motion due to sufficient large magnitude of force and the coefficient of static and dynamic coefficient of friction are magnitude 0.4 and 0.3 respectively. What is maximum magnitude of frictional force applied by ground to block?a)9 Nb)2.8 Nc)6.3 Nd)4NCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A block of weight 30 N is in motion due to sufficient large magnitude of force and the coefficient of static and dynamic coefficient of friction are magnitude 0.4 and 0.3 respectively. What is maximum magnitude of frictional force applied by ground to block?a)9 Nb)2.8 Nc)6.3 Nd)4NCorrect answer is option 'A'. Can you explain this answer?.
Solutions for A block of weight 30 N is in motion due to sufficient large magnitude of force and the coefficient of static and dynamic coefficient of friction are magnitude 0.4 and 0.3 respectively. What is maximum magnitude of frictional force applied by ground to block?a)9 Nb)2.8 Nc)6.3 Nd)4NCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Civil Engineering (CE). Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free.
Here you can find the meaning of A block of weight 30 N is in motion due to sufficient large magnitude of force and the coefficient of static and dynamic coefficient of friction are magnitude 0.4 and 0.3 respectively. What is maximum magnitude of frictional force applied by ground to block?a)9 Nb)2.8 Nc)6.3 Nd)4NCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A block of weight 30 N is in motion due to sufficient large magnitude of force and the coefficient of static and dynamic coefficient of friction are magnitude 0.4 and 0.3 respectively. What is maximum magnitude of frictional force applied by ground to block?a)9 Nb)2.8 Nc)6.3 Nd)4NCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for A block of weight 30 N is in motion due to sufficient large magnitude of force and the coefficient of static and dynamic coefficient of friction are magnitude 0.4 and 0.3 respectively. What is maximum magnitude of frictional force applied by ground to block?a)9 Nb)2.8 Nc)6.3 Nd)4NCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of A block of weight 30 N is in motion due to sufficient large magnitude of force and the coefficient of static and dynamic coefficient of friction are magnitude 0.4 and 0.3 respectively. What is maximum magnitude of frictional force applied by ground to block?a)9 Nb)2.8 Nc)6.3 Nd)4NCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A block of weight 30 N is in motion due to sufficient large magnitude of force and the coefficient of static and dynamic coefficient of friction are magnitude 0.4 and 0.3 respectively. What is maximum magnitude of frictional force applied by ground to block?a)9 Nb)2.8 Nc)6.3 Nd)4NCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Civil Engineering (CE) tests.
Explore Courses for Civil Engineering (CE) exam

Top Courses for Civil Engineering (CE)

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev