Centre of mass of three particles of masses 
and 3 kg lies at the point 
and centre of mass of another system of particles of total mass 3 kg lies at the point 
, 
. Where should we put a particle of mass 5 kg, so that the centre of mass of the entire system lies at the centre of mass of first system?
A
B
C
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
D
Centre of mass of 1 st system already lies at 
, therefore centre of mass of 3 kg and 5 kg
should lie at 
, 
.
On solving, we get
i.e., 5 kg mass should be kept at 
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