Three identical spheres, each of mass 1 kg are kept as shown in figure – McqOptions

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1.	Three identical spheres, each of mass 1 kg are kept as shown in figure, touching each other, with their centres on a straight line. If their centres are marked P, Q, R respectively, the distance of centre of mass of the system from P is
A.	\[\frac{PQ+PR+QR}{3}\]
B.	\[\frac{PQ+PR}{3}\]
C.	\[\frac{PQ+QR}{3}\]
D.	\[\frac{PR+QR}{3}\]
Answer» C. \[\frac{PQ+QR}{3}\]

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