Question

two bodies of masses 0.8 kg and 1.2 kg are located at 1, - 2 and minus 3, 4 respectively the coordinates of CMR​

Answer 1

X coordinate of CM = (m1x1+m2x2)/(m1+m2)

= (1×0.8 + 1.2×3)/2 = (0.8+3.6)/2

= 4.4/2 = 2.2

Y coordinate of CM = (m1y1+m2y2)/(m1+m2)

= (-2×0.8 + 4×1.2)/2 = (-1.6+4.8)/2

= 3.2/2 = 1.6

Therefore, coordinates of centre of mass = (2.2,1.6)

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