Three masses are placed on the x-axis: 300 g at origin, 500 g at x=40 cm and 400 g at x=70 cm. The distance of the centre of mass from the origin is
As learnt in
Centre of mass when some mass is added in the body -
m1 & are mass and position of centre of mass for whole body. m2 & are mass and position of centre of mass of added mass.
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