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Three identical spheres, each of mass 3 kg are placed touching each other

Three identical spheres, each of mass 3 kg are placed touching each other with their centres lying on a straight line. The centres of the spheres are marked as P, Q and R respectively. The distance of centre of mass of the system from P is

Options

(a) PQ+QR+PR/3
(b) PQ+PR/3
(c) PQ+QR+PR/9
(d) PQ+PR/9

Correct Answer:

PQ+PR/3

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

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