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Question 30563
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Center of Mass, Momentum and Collision: JEE — Explosion COM MCQ

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JEE — Explosion COMMediumQuestion 30563

Question

A shell at rest explodes into three pieces. The COM of the three pieces after the explosion:
  1. A
    Moves in the direction of the heaviest piece
  2. B
    Remains at the original position (no external force)
    Correct
  3. C
    Moves in the direction of the explosion
  4. D
    Moves randomly

Correct answer

Remains at the original position (no external force)

Explanation

With no external force, the COM of the system remains stationary (or moves at constant velocity). If initially at rest, COM stays at rest.

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