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We use sometimes the measures to know the direction of moment in the calculations of the moments caused by the gravitational forces over the body above the ground level. Which one 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.
Most Upvoted Answer
We use sometimes the measures to know the direction of moment in the c...
Explanation:
To determine the direction of the moment caused by gravitational forces over a body, we can use the right-hand rule. The right-hand rule is a convention used in physics to determine the direction of a vector or moment in a three-dimensional coordinate system.
The right-hand rule states that if you align your thumb with the positive direction of a specified axis, and then curl your fingers towards the other specified axis, the direction in which your fingers point is the positive direction of the cross product of the two specified axes.
In this case, we are considering the direction of the moment caused by gravitational forces over a body above the ground level. The specified axis for the thumb is the z-axis. We need to determine the direction of the cross product between the x-axis and the y-axis.
Using the right-hand rule:
- Align your thumb with the positive direction of the z-axis.
- Curl your fingers from the positive direction of the x-axis towards the positive direction of the y-axis.
Result:
The direction in which your fingers point is the positive direction of the cross product between the x-axis and the y-axis. In this case, the direction is from the x-axis to the y-axis.
Conclusion:
Therefore, the correct answer is option 'A', where the thumb is aligned with the z-axis, and the fingers are curled from the x-axis to the y-axis.
To determine the direction of the moment caused by gravitational forces over a body, we can use the right-hand rule. The right-hand rule is a convention used in physics to determine the direction of a vector or moment in a three-dimensional coordinate system.
The right-hand rule states that if you align your thumb with the positive direction of a specified axis, and then curl your fingers towards the other specified axis, the direction in which your fingers point is the positive direction of the cross product of the two specified axes.
In this case, we are considering the direction of the moment caused by gravitational forces over a body above the ground level. The specified axis for the thumb is the z-axis. We need to determine the direction of the cross product between the x-axis and the y-axis.
Using the right-hand rule:
- Align your thumb with the positive direction of the z-axis.
- Curl your fingers from the positive direction of the x-axis towards the positive direction of the y-axis.
Result:
The direction in which your fingers point is the positive direction of the cross product between the x-axis and the y-axis. In this case, the direction is from the x-axis to the y-axis.
Conclusion:
Therefore, the correct answer is option 'A', where the thumb is aligned with the z-axis, and the fingers are curled from the x-axis to the y-axis.
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We use sometimes the measures to know the direction of moment in the calculations of the moments caused by the gravitational forces over the body above the ground level. Which one 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 2025 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 moments caused by the gravitational forces over the body above the ground level. Which one 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 2025 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 moments caused by the gravitational forces over the body above the ground level. Which one 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?.
We use sometimes the measures to know the direction of moment in the calculations of the moments caused by the gravitational forces over the body above the ground level. Which one 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 2025 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 moments caused by the gravitational forces over the body above the ground level. Which one 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 2025 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 moments caused by the gravitational forces over the body above the ground level. Which one 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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