Mechanical Engineering Exam > Mechanical Engineering Questions > Which of the following is true?a)If we are co...
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Which of the following is true?
- a)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is negative
- b)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is also negative as no such assumptions can be taken
- c)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is also positive as no such assumptions can be taken
- d)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is neither positive nor negative as we only pre assumed the clockwise direction
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Which of the following is true?a)If we are considering the clockwise d...
We can take such assumptions. We are free to do so. We just need to specify if clockwise is positive then the counter clockwise is to be negative. Also such assumption are very useful in 2D calculation of the moments caused by various forces on the body.
Most Upvoted Answer
Which of the following is true?a)If we are considering the clockwise d...
Explanation:
To understand why option 'A' is true, let's consider the conventions commonly used in mechanics when describing rotations.
1. Clockwise direction as positive:
When considering the clockwise direction as positive, we assume that a rotation in the clockwise direction is a positive rotation. This means that the rotation is in the direction of increasing angles.
2. Counter clockwise direction as negative:
Similarly, when considering the counter clockwise direction as negative, we assume that a rotation in the counter clockwise direction is a negative rotation. This means that the rotation is in the direction of decreasing angles.
3. Explanation of option 'A':
Option 'A' states that if we consider the clockwise direction to be positive, then the rotation along the counter clockwise direction is negative. This is true because the counter clockwise direction is opposite to the clockwise direction, and therefore, it can be considered as a negative rotation.
Example:
Let's consider a circle divided into four quadrants: Q1, Q2, Q3, and Q4. If we start from Q1 and move to Q4 in the clockwise direction, it can be considered as a positive rotation. On the other hand, if we start from Q1 and move to Q2 in the counter clockwise direction, it can be considered as a negative rotation.
Therefore, based on the conventions mentioned above, option 'A' is true.
To understand why option 'A' is true, let's consider the conventions commonly used in mechanics when describing rotations.
1. Clockwise direction as positive:
When considering the clockwise direction as positive, we assume that a rotation in the clockwise direction is a positive rotation. This means that the rotation is in the direction of increasing angles.
2. Counter clockwise direction as negative:
Similarly, when considering the counter clockwise direction as negative, we assume that a rotation in the counter clockwise direction is a negative rotation. This means that the rotation is in the direction of decreasing angles.
3. Explanation of option 'A':
Option 'A' states that if we consider the clockwise direction to be positive, then the rotation along the counter clockwise direction is negative. This is true because the counter clockwise direction is opposite to the clockwise direction, and therefore, it can be considered as a negative rotation.
Example:
Let's consider a circle divided into four quadrants: Q1, Q2, Q3, and Q4. If we start from Q1 and move to Q4 in the clockwise direction, it can be considered as a positive rotation. On the other hand, if we start from Q1 and move to Q2 in the counter clockwise direction, it can be considered as a negative rotation.
Therefore, based on the conventions mentioned above, option 'A' is true.
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Which of the following is true?a)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is negativeb)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is also negative as no such assumptions can be takenc)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is also positive as no such assumptions can be takend)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is neither positive nor negative as we only pre assumed the clockwise directionCorrect answer is option 'A'. Can you explain this answer?
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Which of the following is true?a)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is negativeb)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is also negative as no such assumptions can be takenc)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is also positive as no such assumptions can be takend)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is neither positive nor negative as we only pre assumed the clockwise directionCorrect 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 Which of the following is true?a)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is negativeb)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is also negative as no such assumptions can be takenc)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is also positive as no such assumptions can be takend)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is neither positive nor negative as we only pre assumed the clockwise directionCorrect 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 Which of the following is true?a)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is negativeb)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is also negative as no such assumptions can be takenc)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is also positive as no such assumptions can be takend)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is neither positive nor negative as we only pre assumed the clockwise directionCorrect answer is option 'A'. Can you explain this answer?.
Which of the following is true?a)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is negativeb)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is also negative as no such assumptions can be takenc)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is also positive as no such assumptions can be takend)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is neither positive nor negative as we only pre assumed the clockwise directionCorrect 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 Which of the following is true?a)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is negativeb)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is also negative as no such assumptions can be takenc)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is also positive as no such assumptions can be takend)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is neither positive nor negative as we only pre assumed the clockwise directionCorrect 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 Which of the following is true?a)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is negativeb)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is also negative as no such assumptions can be takenc)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is also positive as no such assumptions can be takend)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is neither positive nor negative as we only pre assumed the clockwise directionCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Which of the following is true?a)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is negativeb)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is also negative as no such assumptions can be takenc)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is also positive as no such assumptions can be takend)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is neither positive nor negative as we only pre assumed the clockwise directionCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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ample number of questions to practice Which of the following is true?a)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is negativeb)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is also negative as no such assumptions can be takenc)If we are considering the clockwise direction to be positive then the rotation along the counter clockwise direction is also positive as no such assumptions can be takend)If we are considering the clockwise direction to be negative then the rotation along the counter clockwise direction is neither positive nor negative as we only pre assumed the clockwise directionCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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