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A person standing on a rotating platform has his hands lowered. He suddenly outstretches his arms. The angular momentum
- a)Becomes Zero
- b)Increases
- c)Decreases
- d)Remains same
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
A person standing on a rotating platform has his hands lowered. He sud...
Explanation:
Initial Angular Momentum:
- When the person has his hands lowered, the initial angular momentum of the system is determined by the mass of the system and the rate of rotation.
Conservation of Angular Momentum:
- According to the law of conservation of angular momentum, when no external torque acts on a system, the total angular momentum of the system remains constant.
Action of Outstretching Arms:
- When the person outstretches his arms, he redistributes the mass of his body but does not apply any external torque to the system.
Conservation of Angular Momentum:
- As there is no external torque acting on the system, the total angular momentum of the system must remain the same.
Conclusion:
- Therefore, when the person outstretches his arms, the angular momentum of the system remains the same, as per the principle of conservation of angular momentum.
Initial Angular Momentum:
- When the person has his hands lowered, the initial angular momentum of the system is determined by the mass of the system and the rate of rotation.
Conservation of Angular Momentum:
- According to the law of conservation of angular momentum, when no external torque acts on a system, the total angular momentum of the system remains constant.
Action of Outstretching Arms:
- When the person outstretches his arms, he redistributes the mass of his body but does not apply any external torque to the system.
Conservation of Angular Momentum:
- As there is no external torque acting on the system, the total angular momentum of the system must remain the same.
Conclusion:
- Therefore, when the person outstretches his arms, the angular momentum of the system remains the same, as per the principle of conservation of angular momentum.
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A person standing on a rotating platform has his hands lowered. He suddenly outstretches his arms. The angular momentuma)Becomes Zerob)Increasesc)Decreasesd)Remains sameCorrect answer is option 'D'. Can you explain this answer?
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A person standing on a rotating platform has his hands lowered. He suddenly outstretches his arms. The angular momentuma)Becomes Zerob)Increasesc)Decreasesd)Remains sameCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A person standing on a rotating platform has his hands lowered. He suddenly outstretches his arms. The angular momentuma)Becomes Zerob)Increasesc)Decreasesd)Remains sameCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A person standing on a rotating platform has his hands lowered. He suddenly outstretches his arms. The angular momentuma)Becomes Zerob)Increasesc)Decreasesd)Remains sameCorrect answer is option 'D'. Can you explain this answer?.
A person standing on a rotating platform has his hands lowered. He suddenly outstretches his arms. The angular momentuma)Becomes Zerob)Increasesc)Decreasesd)Remains sameCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A person standing on a rotating platform has his hands lowered. He suddenly outstretches his arms. The angular momentuma)Becomes Zerob)Increasesc)Decreasesd)Remains sameCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A person standing on a rotating platform has his hands lowered. He suddenly outstretches his arms. The angular momentuma)Becomes Zerob)Increasesc)Decreasesd)Remains sameCorrect answer is option 'D'. Can you explain this answer?.
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