Two bodies A and B initially at rest are attracted towards each other due to gravitation. Given that A is much heavier than B. Which of the followings correctly describes the relative motion of the centre of mass of the bodies?
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a
it moves towards A
b
it moves towards B
c
it moves perpendicular to the line joining the particles
d
it remains at rest
answer is D.
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Detailed Solution
As there is no external force, so centre of mass remain at rest