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Two dimensions. In the figure, three point particles are fixed in place in an xy plane. Particle A has mass MA-7 g. particle



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particle mass I coordinates (0,0) B. | 247=149 (0, 19 cm) 3x7= 219 | 0(-28.5,0) 4x7 = 289 x,y it A is at the centre of mass o

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