Class 9 Exam > Class 9 Questions > Work done by a centripetal forcea)increases b...
Start Learning for Free
Work done by a centripetal force
- a)increases by decreasing the radius of the circle
- b)decreases by increasing the radius of the circle
- c)increases by increasing the mass of the body
- d)is always zero?
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Work done by a centripetal forcea)increases by decreasing the radius o...
Work done by a centripetal force
The work done by a force is defined as the product of the magnitude of the force and the distance over which the force is applied. In the case of a centripetal force, which is directed towards the center of a circular path, the work done can be analyzed as follows:
1. Definition of work: Work is defined as the product of the force and the displacement of the object in the direction of the force. Mathematically, work (W) is given by the equation W = F * d * cos(theta), where F is the force, d is the displacement, and theta is the angle between the force and the displacement vectors.
2. Centripetal force: A centripetal force is a force that acts towards the center of a circular path and is responsible for keeping an object moving in a curved path. It is always perpendicular to the displacement of the object.
3. Perpendicular displacement: The displacement of an object moving in a circular path is always perpendicular to the direction of the centripetal force. This means that the angle between the force vector and the displacement vector is 90 degrees (cos(90) = 0).
4. Work done by a centripetal force: Since the angle between the force and the displacement vectors is 90 degrees, the cosine of 90 degrees is zero. Therefore, the work done by a centripetal force is always zero.
Therefore, the correct answer is D: The work done by a centripetal force is always zero.
View all questions of this test
The work done by a force is defined as the product of the magnitude of the force and the distance over which the force is applied. In the case of a centripetal force, which is directed towards the center of a circular path, the work done can be analyzed as follows:
1. Definition of work: Work is defined as the product of the force and the displacement of the object in the direction of the force. Mathematically, work (W) is given by the equation W = F * d * cos(theta), where F is the force, d is the displacement, and theta is the angle between the force and the displacement vectors.
2. Centripetal force: A centripetal force is a force that acts towards the center of a circular path and is responsible for keeping an object moving in a curved path. It is always perpendicular to the displacement of the object.
3. Perpendicular displacement: The displacement of an object moving in a circular path is always perpendicular to the direction of the centripetal force. This means that the angle between the force vector and the displacement vector is 90 degrees (cos(90) = 0).
4. Work done by a centripetal force: Since the angle between the force and the displacement vectors is 90 degrees, the cosine of 90 degrees is zero. Therefore, the work done by a centripetal force is always zero.
Therefore, the correct answer is D: The work done by a centripetal force is always zero.
|
Explore Courses for Class 9 exam
|
|
Similar Class 9 Doubts
Top Courses for Class 9View all
Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer?
Question Description
Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer?.
Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer?.
Solutions for Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Work done by a centripetal forcea)increases by decreasing the radius of the circleb)decreases by increasing the radius of the circlec)increases by increasing the mass of the bodyd)is always zero?Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 9 tests.
|
|
Explore Courses for Class 9 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup