Three identical spheres each of radius `R` are placed thouching each other on a horizontal table as shown in figure. The co-ordinates of centre of mass are :
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Three identical spheres each of radius R are placed touching each oother on a horizontal table. Where is the centre of mass of the system located?

Three identical spheres each of 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 A is

Three identical spheres each of 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 A is