NEET Physics Centre of Mass MCQ Question
Which of the following statements regarding the centre of mass (CM) is correct?
The CM of a uniform rod is located at its geometric center regardless of its orientation.
For three particles of equal mass arranged in a straight line, the CM will always be at the midpoint of the arrangement.
The CM of a system of particles can never lie outside the physical boundaries of the system.
The position of the CM is influenced by the distribution of mass in the system, closer to the heavier particle in a two-particle system.
Correct Answer
Detailed Explanation
The CM of a uniform thin rod is indeed located at its geometric center (L/2 from either end), as stated in the NCERT context. Option B is incorrect because the CM for equal masses in a straight line lies at the midpoint, not necessarily in all arrangements. Option C is false, as the CM can lie outside the body (e.g., a ring). Option D is partially correct but does not fully align with the definition of CM for equal masses.
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