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Question 30577
JEE Physics · Hard

Center of Mass, Momentum and Collision: Advanced — COM in Gravity MCQ

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Advanced — COM in GravityHardQuestion 30577

Question

Two particles (m and 2m) are connected by a light rod. When thrown at 45°, the COM follows:
  1. A
    A complex path
  2. B
    A parabolic path identical to a point mass
    Correct
  3. C
    A straight line
  4. D
    An ellipse

Correct answer

A parabolic path identical to a point mass

Explanation

Regardless of internal structure or rotation, the COM of a system moves under external force only. Gravity acts on total mass at COM → COM follows same parabola as a point mass.

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