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There are some passengers inside a stationary railway compartment. The centre of masses of the compartment itself(without the passengers) is C1, while the centre of mass of the compartment plus passengers’ system is C2. if the passengers moves about inside the compartment

  • a)
    both C1 and C2 will move with respect to the ground

  • b)
    neither C1 nor C2 will move with respect to the ground

  • c)
    C1 will move but C2 will be stationary with respect to the ground

  • d)
    C2 will move but C1 will be stationary with respect to the ground

Correct answer is option 'C'. Can you explain this answer?
Verified Answer
There are some passengers inside a stationary railway compartment. The...
When net Fexternal​=0, then the centre of mass of the system remains at rest.


Thus if the passenger move inside the compartment which donot require any external force, so the centre of mass of the "passenger + compartment" system must remain at rest and hence C2​ will be fixed w.r.t ground.


Also due to the movement of the passenger, the position of centre of mass of the passengers only will change, thus C1​ will have to move in such a way that C2​ may remain fixed w.r.t ground.
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Most Upvoted Answer
There are some passengers inside a stationary railway compartment. The...
(with the passengers) is C2. When the passengers start moving in the compartment, the centre of mass of the system:

1. Will remain at C2.
2. Will move towards C1.
3. Will move away from C1.
4. Cannot be determined without additional information.

The correct answer is 1. The centre of mass of a system will remain at the same position unless an external force acts on the system. In this case, since the passengers are moving inside the compartment, but the compartment itself is stationary, there is no external force acting on the system. Therefore, the centre of mass will remain at C2.
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Community Answer
There are some passengers inside a stationary railway compartment. The...
Yes see .In case c1 the force is act along the motion . But in case c2 the force is act but pseudo force act due to pseudo accelration with respect to ground i.e. c2 is stationary and c1 is move. If you are not understand ask me i explain with other easy case.
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There are some passengers inside a stationary railway compartment. The centre of masses of the compartment itself(without the passengers) is C1, while the centre of mass of the compartment plus passengers’ system is C2. if the passengers moves about inside the compartmenta)both C1 and C2 will move with respect to the groundb)neither C1 nor C2 will move with respect to the groundc)C1 will move but C2 will be stationary with respect to the groundd)C2 will move but C1 will be stationary with respect to the groundCorrect answer is option 'C'. Can you explain this answer?
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There are some passengers inside a stationary railway compartment. The centre of masses of the compartment itself(without the passengers) is C1, while the centre of mass of the compartment plus passengers’ system is C2. if the passengers moves about inside the compartmenta)both C1 and C2 will move with respect to the groundb)neither C1 nor C2 will move with respect to the groundc)C1 will move but C2 will be stationary with respect to the groundd)C2 will move but C1 will be stationary with respect to the groundCorrect answer is option 'C'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about There are some passengers inside a stationary railway compartment. The centre of masses of the compartment itself(without the passengers) is C1, while the centre of mass of the compartment plus passengers’ system is C2. if the passengers moves about inside the compartmenta)both C1 and C2 will move with respect to the groundb)neither C1 nor C2 will move with respect to the groundc)C1 will move but C2 will be stationary with respect to the groundd)C2 will move but C1 will be stationary with respect to the groundCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for There are some passengers inside a stationary railway compartment. The centre of masses of the compartment itself(without the passengers) is C1, while the centre of mass of the compartment plus passengers’ system is C2. if the passengers moves about inside the compartmenta)both C1 and C2 will move with respect to the groundb)neither C1 nor C2 will move with respect to the groundc)C1 will move but C2 will be stationary with respect to the groundd)C2 will move but C1 will be stationary with respect to the groundCorrect answer is option 'C'. Can you explain this answer?.
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