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We use sometimes the measures to know the direction of moment in the calculations of the centre of mass. It is done by right handed coordinate system. Which is right about it(consider the mentioned axis to be positive)?
  • a)
    Thumb is z-axis, fingers curled from x-axis to y-axis
  • b)
    Thumb is x-axis, fingers curled from z-axis to y-axis
  • c)
    Thumb is y-axis, fingers curled from x-axis to z-axis
  • d)
    Thumb is z-axis, fingers curled from y-axis to x-axis
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
We use sometimes the measures to know the direction of moment in the c...
As right handed coordinate system means that you are curling your fingers from positive x-axis towards y-axis and the thumb which is projected is pointed to the positive z-axis. Thus visualizing the same and knowing the basic members of axis will not create much problem.
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Most Upvoted Answer
We use sometimes the measures to know the direction of moment in the c...
Explanation:

Right-Handed Coordinate System:
- In a right-handed coordinate system, the direction of moment is determined by using the right-hand rule.
- This rule states that if you point your right thumb in the direction of the axis (z-axis) and curl your fingers from the x-axis to the y-axis, the direction your fingers curve will indicate the positive direction of rotation or moment.

Thumb is Z-axis:
- When the thumb is aligned with the z-axis, it represents the direction of the axis of rotation or moment.
- In this case, the z-axis is the axis of rotation for calculating the centre of mass.

Fingers curled from X-axis to Y-axis:
- By curling your fingers from the x-axis to the y-axis in a right-handed manner, you are determining the positive direction of rotation or moment around the z-axis.

Conclusion:
- Therefore, in a right-handed coordinate system, when the thumb is aligned with the z-axis and the fingers are curled from the x-axis to the y-axis, it signifies the correct direction of moment in calculations involving the centre of mass.
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We use sometimes the measures to know the direction of moment in the calculations of the centre of mass. It is done by right handed coordinate system. Which is right about it(consider the mentioned axis to be positive)?a)Thumb is z-axis, fingers curled from x-axis to y-axisb)Thumb is x-axis, fingers curled from z-axis to y-axisc)Thumb is y-axis, fingers curled from x-axis to z-axisd)Thumb is z-axis, fingers curled from y-axis to x-axisCorrect answer is option 'A'. Can you explain this answer?
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We use sometimes the measures to know the direction of moment in the calculations of the centre of mass. It is done by right handed coordinate system. Which is right about it(consider the mentioned axis to be positive)?a)Thumb is z-axis, fingers curled from x-axis to y-axisb)Thumb is x-axis, fingers curled from z-axis to y-axisc)Thumb is y-axis, fingers curled from x-axis to z-axisd)Thumb is z-axis, fingers curled from y-axis to x-axisCorrect 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 We use sometimes the measures to know the direction of moment in the calculations of the centre of mass. It is done by right handed coordinate system. Which is right about it(consider the mentioned axis to be positive)?a)Thumb is z-axis, fingers curled from x-axis to y-axisb)Thumb is x-axis, fingers curled from z-axis to y-axisc)Thumb is y-axis, fingers curled from x-axis to z-axisd)Thumb is z-axis, fingers curled from y-axis to x-axisCorrect 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 We use sometimes the measures to know the direction of moment in the calculations of the centre of mass. It is done by right handed coordinate system. Which is right about it(consider the mentioned axis to be positive)?a)Thumb is z-axis, fingers curled from x-axis to y-axisb)Thumb is x-axis, fingers curled from z-axis to y-axisc)Thumb is y-axis, fingers curled from x-axis to z-axisd)Thumb is z-axis, fingers curled from y-axis to x-axisCorrect answer is option 'A'. Can you explain this answer?.
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