alleryFor two particles of equal mass, the centre of mass lies:
AMidway between them
BMidway behind them
CMidway beneath them
DMidway beyond them
Answer & Solution
Correct answer: A. Midway between them
1. Equal masses have equal weighting in the average.
2. The average position is therefore the middle.
3. For two particles of equal mass the centre of mass lies exactly midway between them.
4. So the answer is midway between them.
_Source: syllabus Physics Part I, Ch 6 'Systems of Particles and Rotational Motion'_
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