Question

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27. 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
[Kerala PET 2005)
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Answer 1

Explanation:

Physics is the natural science that studies matter, its motion and behavior through space and time, and the related entities of energy and force. Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves.

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