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Chapter 09, Problem 004 In the figure, three uniform thin rods, each of length L 45.0 cm, form an inverted U. The vertical rods each have a mass of 16.0 g; the horizontal rod has a mass of 48.0 g. What are (a) the x coordinate and (b) the y coordinate of the systems center of mass? (a) Number Units (b) Number Units

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Solution We know that Cm 45 2 48x_ +16x 45 +16x0 48+16+16 23.377 cm 45 45x 0+16x- +16x-_ 2 45 2 45 +16+16 9.351 cm

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