Mechanical Engineering Exam  >  Mechanical Engineering Questions  >  Assertion (A): The buoyant force for a floati... Start Learning for Free
Assertion (A): The buoyant force for a floating body passesthrough the centroid of the displaced volume.  
Reason (R): The force of buoyancy is a vertical force & equal tothe weight of fluid displaced.
  • a)
    Both A and R are individually true and R is the correct explanation ofA
  • b)
    Both A and R are individually true but R is not the correct explanationof A
  • c)
    A is true but R is false
  • d)
    A is false but R is true
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Assertion (A): The buoyant force for a floating body passesthrough the...
Ans. (a) When a solid body is either wholly or partially immersed in a fluid, the hydrostatic lift due to net vertical component of the hydrostatic pressure forces experienced by the body is called the buoyant force. The buoyant force on a submerged or floating body is equal to the weight of liquid displaced by the body and acts vertically upward through the centroid of displaced volume known as centre of buoyancy.
The x coordinate of the center of the buoyancy is obtained as

Which is the centroid of the displaced volume. It is due to the buoyant force is equals to the weight of liquid displaced by the submerged body of volume and the force of buoyancy is a vertical force.
View all questions of this test
Most Upvoted Answer
Assertion (A): The buoyant force for a floating body passesthrough the...
The statement is about the buoyant force acting on a floating body and its relationship with the centroid of the displaced volume.

To understand this, let's break down the statement and analyze each part separately.

Assertion (A): The buoyant force for a floating body passes through the centroid of the displaced volume.

The centroid of a shape is the point at which it would balance if it were supported at that point. In the case of a floating body, the buoyant force is the upward force exerted by a fluid on the body. This force is equal to the weight of the fluid displaced by the body.

Reason (R): The force of buoyancy is a vertical force equal to the weight of fluid displaced.

This reason is correct because the buoyant force is indeed a vertical force. It is equal to the weight of the fluid displaced by the body according to Archimedes' principle. When an object is immersed in a fluid, it experiences an upward buoyant force that is equal to the weight of the fluid it displaces.

Now let's analyze the relationship between the assertion and the reason.

The buoyant force acts in the upward direction and is equal to the weight of the fluid displaced. This force acts through the center of gravity of the displaced volume of fluid. The center of gravity of a regular shape, such as a cube or a sphere, coincides with its geometric center or centroid. However, for irregular shapes, the center of gravity may not coincide with the centroid.

In the case of a floating body, the buoyant force acts through the centroid of the displaced volume. This is because the buoyant force is distributed uniformly throughout the fluid, and the centroid represents the average location of this force distribution.

Therefore, both Assertion (A) and Reason (R) are individually true. Additionally, Reason (R) is the correct explanation of Assertion (A) because the buoyant force being a vertical force equal to the weight of fluid displaced explains why it passes through the centroid of the displaced volume.

Hence, the correct answer is option 'A' - Both A and R are individually true, and R is the correct explanation of A.
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
Explore Courses for Mechanical Engineering exam

Top Courses for Mechanical Engineering

Assertion (A): The buoyant force for a floating body passesthrough the centroid of the displaced volume.Reason (R): The force of buoyancy is a vertical force & equal tothe weight of fluid displaced.a)Both A and R are individually true and R is the correct explanation ofAb)Both A and R are individually true but R is not the correct explanationof Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer?
Question Description
Assertion (A): The buoyant force for a floating body passesthrough the centroid of the displaced volume.Reason (R): The force of buoyancy is a vertical force & equal tothe weight of fluid displaced.a)Both A and R are individually true and R is the correct explanation ofAb)Both A and R are individually true but R is not the correct explanationof Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Assertion (A): The buoyant force for a floating body passesthrough the centroid of the displaced volume.Reason (R): The force of buoyancy is a vertical force & equal tothe weight of fluid displaced.a)Both A and R are individually true and R is the correct explanation ofAb)Both A and R are individually true but R is not the correct explanationof Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): The buoyant force for a floating body passesthrough the centroid of the displaced volume.Reason (R): The force of buoyancy is a vertical force & equal tothe weight of fluid displaced.a)Both A and R are individually true and R is the correct explanation ofAb)Both A and R are individually true but R is not the correct explanationof Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Assertion (A): The buoyant force for a floating body passesthrough the centroid of the displaced volume.Reason (R): The force of buoyancy is a vertical force & equal tothe weight of fluid displaced.a)Both A and R are individually true and R is the correct explanation ofAb)Both A and R are individually true but R is not the correct explanationof Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of Assertion (A): The buoyant force for a floating body passesthrough the centroid of the displaced volume.Reason (R): The force of buoyancy is a vertical force & equal tothe weight of fluid displaced.a)Both A and R are individually true and R is the correct explanation ofAb)Both A and R are individually true but R is not the correct explanationof Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Assertion (A): The buoyant force for a floating body passesthrough the centroid of the displaced volume.Reason (R): The force of buoyancy is a vertical force & equal tothe weight of fluid displaced.a)Both A and R are individually true and R is the correct explanation ofAb)Both A and R are individually true but R is not the correct explanationof Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Assertion (A): The buoyant force for a floating body passesthrough the centroid of the displaced volume.Reason (R): The force of buoyancy is a vertical force & equal tothe weight of fluid displaced.a)Both A and R are individually true and R is the correct explanation ofAb)Both A and R are individually true but R is not the correct explanationof Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Assertion (A): The buoyant force for a floating body passesthrough the centroid of the displaced volume.Reason (R): The force of buoyancy is a vertical force & equal tothe weight of fluid displaced.a)Both A and R are individually true and R is the correct explanation ofAb)Both A and R are individually true but R is not the correct explanationof Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Assertion (A): The buoyant force for a floating body passesthrough the centroid of the displaced volume.Reason (R): The force of buoyancy is a vertical force & equal tothe weight of fluid displaced.a)Both A and R are individually true and R is the correct explanation ofAb)Both A and R are individually true but R is not the correct explanationof Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
Explore Courses for Mechanical Engineering exam

Top Courses for Mechanical Engineering

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