1.

). The position vector of a body of mass 2 gm is(2 1+31) meter and that of mass 5gm is(4 1-5)meter. Find the position vector of the centre of mass.

Answer»

position vector will.be m1r1+m2r2/M1+m2=2(2i+3j)+5(4i-5j)/2+5=4i+6j+20i-25j/7=24i-19j/7



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