three masses 3kg,4kg,5kg are located at corners of an equilateral triangle of side 1m.locate the centre of mass of the system

Answer 1

The x coordinates of masses 3kg,4kg,5kg are 0,m,m/2 respectively.

So the x coordinates of COM is

3×0+4×m+5×(m/2) / (3+4+5) (whole upon)
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=13m/24