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Question

Three identical spheres each of mass m and radius R are placed touching each other so that their centres A, B and C lie on a straight line. The position of their centre of mass from the centre of A is
  1. 2R3
  2. 2R
  3. 5R3
  4. 4R3

A
5R3
B
4R3
C
2R
D
2R3
Solution
Verified by Toppr

[B] From Symmetry B is the centre of ABC combined.
Position of centre of mass of ABC (combined) from
centre of A=R+R=2R

1214909_40054_ans_ed3cd7f91dd646fc9a5661d9d563c121.PNG

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