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6. system of particles and rotational motion — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics6. system of particles and rotational motion1 Mark
MCQ
If a bomb is thrown at a certain angle with the horizontal and after exploding on the way the different fragments move in different directions then the centre of mass
  • ✓
    Would move along the same parabolic path
  • B
    Would move along a horizontal path
  • C
    Would move along a vertical line
  • D
    None of these
✓

Answer

Correct option: A.
Would move along the same parabolic path
a
When a bomb explodes in a parabolic path, different fragment goes in different path with different trajectories, but COM continues to travel in the same parabolic path because force generated during explosions is internal force and an internal force cannot change path of $COM$.

Path of $COM$ can only be decided with the help of external force only(in this case gravity) therefore parabolic path.

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