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When a mass is rotating in a plane about a fixed point, its angular momentum is directed along : [2012]
- a)a line perpendicular to the plane of rotation
- b)the line making an angle of 45° to the plane of rotation
- c)the radius
- d)the tangent to the orbit
Correct answer is option 'A'. Can you explain this answer?
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When a mass is rotating in a plane about a fixed point, its angular mo...
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When a mass is rotating in a plane about a fixed point, its angular mo...
The correct answer is a) a line perpendicular to the plane of rotation.
Angular momentum is a vector quantity and is defined as the cross product of the position vector and the linear momentum vector. In the case of rotational motion, the position vector is the radius vector from the fixed point to the mass, and the linear momentum vector is the mass times the velocity vector.
Since the cross product of two vectors is perpendicular to both vectors, the angular momentum is directed along a line perpendicular to the plane of rotation. This can be understood by considering the right-hand rule, where if you curl the fingers of your right hand in the direction of rotation, the thumb points in the direction of the angular momentum vector.
Therefore, option a) is the correct answer.
Angular momentum is a vector quantity and is defined as the cross product of the position vector and the linear momentum vector. In the case of rotational motion, the position vector is the radius vector from the fixed point to the mass, and the linear momentum vector is the mass times the velocity vector.
Since the cross product of two vectors is perpendicular to both vectors, the angular momentum is directed along a line perpendicular to the plane of rotation. This can be understood by considering the right-hand rule, where if you curl the fingers of your right hand in the direction of rotation, the thumb points in the direction of the angular momentum vector.
Therefore, option a) is the correct answer.
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When a mass is rotating in a plane about a fixed point, its angular momentum is directed along : [2012]a)a line perpendicular to the plane of rotationb)the line making an angle of 45° to the plane of rotationc)the radiusd)the tangent to the orbitCorrect answer is option 'A'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about When a mass is rotating in a plane about a fixed point, its angular momentum is directed along : [2012]a)a line perpendicular to the plane of rotationb)the line making an angle of 45° to the plane of rotationc)the radiusd)the tangent to the orbitCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When a mass is rotating in a plane about a fixed point, its angular momentum is directed along : [2012]a)a line perpendicular to the plane of rotationb)the line making an angle of 45° to the plane of rotationc)the radiusd)the tangent to the orbitCorrect answer is option 'A'. Can you explain this answer?.
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along : [2012]a)a line perpendicular to the plane of rotationb)the line making an angle of 45° to the plane of rotationc)the radiusd)the tangent to the orbitCorrect answer is option 'A'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about When a mass is rotating in a plane about a fixed point, its angular momentum is directed along : [2012]a)a line perpendicular to the plane of rotationb)the line making an angle of 45° to the plane of rotationc)the radiusd)the tangent to the orbitCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When a mass is rotating in a plane about a fixed point, its angular momentum is directed along : [2012]a)a line perpendicular to the plane of rotationb)the line making an angle of 45° to the plane of rotationc)the radiusd)the tangent to the orbitCorrect answer is option 'A'. Can you explain this answer?.
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