A spar buoy is a buoyant rod weighted to float and protrude vertically as shown below. Suppose that the buoy is maple wood (SG=0.6), 2 in by 2 in by 12 ft, floating in seawater (SG=1.025). How many pounds of steel (SG=7.85) should be added to the bottom end so that h=18 in?

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A spar buoy is a buoyant rod weighted to float and protrude vertically as shown below. Suppose that the buoy is maple wood (SG=0.6), 2 in by 2 in by 12 ft, floating in seawater (SG=1.025). How many pounds of steel (SG=7.85) should be added to the bottom end so that h=18 in?

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