four particles of masses 1kg, 2kg,3kg, and 4kg are at vertices of a rectangle of sides a and b.if a=1m and b=2m find the location of the center of mass

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  1. 1 kg at (0,0)
    2 kg at (0,2)
    3 kg at (1,2)
    4 kg at (1,0)
    total mass = 10 kg
    xcg = (1/10)(1*0 +2*0 + 3*1 +4*1) = 7/10
    ycg = (1/10)(1*0 +2*2 + 3*2 +4*0) = 1

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  2. as 1kg

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