The centre of mass of a system of three particlesof masses 1g, 2g and 3g is taken as the origin ofa coordinate system. The position vectorfourth particle of mass 4g such that the centre ofmass of the four particle system lies at the point(1, 2, 3,) is a(i 2j+3k), where a is a constant.The value of a is:-of a10

The centre of mass of a system of three particlesof masses 1g, 2g and

1.	The centre of mass of a system of three particlesof masses 1g, 2g and 3g is taken as the origin ofa coordinate system. The position vectorfourth particle of mass 4g such that the centre ofmass of the four particle system lies at the point(1, 2, 3,) is a(i 2j+3k), where a is a constant.The value of a is:-of a10
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