Two bodies of different masses 2kg and 4kg are moving with velocities 2m/s and 10m/s towards each other due to mutual gravitational attraction. Then the velocity of the centre of mass is
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a
5ms–1
b
6ms–1
c
8ms–1
d
Zero
answer is D.
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Detailed Solution
vcm=m1v1+m2v2m1+m2;Internal force does not change the position of centre of mass