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Offline Centres

Q.

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 centre of A is

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a

2R3

b

2R

c

5R3

d

4R3

answer is B.

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Detailed Solution

xcm=m1x1+m2x2+m3x3m1+m2+m3

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