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9Two identical thin uniform rods of length Leach are joined to form T shape as shownin the figure. The distance of centre offrom D is14.mass0 2) L/43L/4 4)L

Answer»

Centre of mass of upper rod is at O.Centre of mass of lower rod is at L/2 from O.

Along vertical liney_cm = (m1y1 + m2y2) / (m1 + m2)= (0 + mL/2) / (2m)= L/4

∴ Centre of mass of system is at lower rod and below L/4 from point O



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