Civil Engineering (CE) Exam  >  Civil Engineering (CE) Questions  >  If a force of 30 N is required to move a mass... Start Learning for Free
If a force of 30 N is required to move a mass of 35 kg on a flat surface horizontally at a constant velocity, what will be the coefficient of friction?
  • a)
    0.057
  • b)
    0.087
  • c)
    0.18
  • d)
    0.25
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
If a force of 30 N is required to move a mass of 35 kg on a flat surfa...

R - 35 = 0
R = 35
F = µR
μ=F/R=30/(35 X 9.81)=0.087
Free Test
Community Answer
If a force of 30 N is required to move a mass of 35 kg on a flat surfa...
Calculating Coefficient of Friction
To calculate the coefficient of friction, we can use the formula:
Coefficient of friction (μ) = Force of friction (Ff) / Normal force (Fn)

Given Data
- Force required to move the mass (F) = 30 N
- Mass of the object (m) = 35 kg
- Acceleration of the object (a) = 0 m/s^2 (constant velocity)

Calculating Force of Friction
Since the object is moving at a constant velocity, the force of friction is equal in magnitude but opposite in direction to the applied force.
Therefore, Force of friction (Ff) = Force required to move the mass (F) = 30 N

Calculating Normal Force
Normal force (Fn) is the force exerted by the surface on the object in a direction perpendicular to the surface. In this case, since the object is on a flat surface, the normal force is equal to the weight of the object.
Weight (W) = mass (m) * gravity (g)
Weight (W) = 35 kg * 9.81 m/s^2 = 343.35 N
Therefore, Normal force (Fn) = Weight (W) = 343.35 N

Calculating Coefficient of Friction
Coefficient of friction (μ) = Force of friction (Ff) / Normal force (Fn)
Coefficient of friction (μ) = 30 N / 343.35 N ≈ 0.087
Therefore, the coefficient of friction is approximately 0.087, which corresponds to option 'B'.
Explore Courses for Civil Engineering (CE) exam

Similar Civil Engineering (CE) Doubts

Top Courses for Civil Engineering (CE)

If a force of 30 N is required to move a mass of 35 kg on a flat surface horizontally at a constant velocity, what will be the coefficient of friction?a)0.057b)0.087c)0.18d)0.25Correct answer is option 'B'. Can you explain this answer?
Question Description
If a force of 30 N is required to move a mass of 35 kg on a flat surface horizontally at a constant velocity, what will be the coefficient of friction?a)0.057b)0.087c)0.18d)0.25Correct answer is option 'B'. 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 If a force of 30 N is required to move a mass of 35 kg on a flat surface horizontally at a constant velocity, what will be the coefficient of friction?a)0.057b)0.087c)0.18d)0.25Correct answer is option 'B'. 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 If a force of 30 N is required to move a mass of 35 kg on a flat surface horizontally at a constant velocity, what will be the coefficient of friction?a)0.057b)0.087c)0.18d)0.25Correct answer is option 'B'. Can you explain this answer?.
Solutions for If a force of 30 N is required to move a mass of 35 kg on a flat surface horizontally at a constant velocity, what will be the coefficient of friction?a)0.057b)0.087c)0.18d)0.25Correct answer is option 'B'. 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 If a force of 30 N is required to move a mass of 35 kg on a flat surface horizontally at a constant velocity, what will be the coefficient of friction?a)0.057b)0.087c)0.18d)0.25Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of If a force of 30 N is required to move a mass of 35 kg on a flat surface horizontally at a constant velocity, what will be the coefficient of friction?a)0.057b)0.087c)0.18d)0.25Correct answer is option 'B'. Can you explain this answer?, a detailed solution for If a force of 30 N is required to move a mass of 35 kg on a flat surface horizontally at a constant velocity, what will be the coefficient of friction?a)0.057b)0.087c)0.18d)0.25Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of If a force of 30 N is required to move a mass of 35 kg on a flat surface horizontally at a constant velocity, what will be the coefficient of friction?a)0.057b)0.087c)0.18d)0.25Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice If a force of 30 N is required to move a mass of 35 kg on a flat surface horizontally at a constant velocity, what will be the coefficient of friction?a)0.057b)0.087c)0.18d)0.25Correct answer is option 'B'. 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