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A rigid body consists of a 3kg mass located at r1=(2i^+5j^)m and a 2kg mass located at r2=(4i^+2j^)m The position of centre of mass is

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a
145j^+195i^m
b
145i^+195j^m
c
195i^+145j^m
d
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detailed solution

Correct option is B

r→cm=m1r→1+m2r2→m1+m2

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