A 3-ft-diameter circular plate is located on the vertical side of an open tank containing gasoline. The force exerted by gasoline on the plate acts 3 in below the centroid of the plate. Determine the magnitude of this force.
A hollow metallic sphere weighs 9.8 1 kg-m/ and floats in water. What should be the external diameter of the sphere such that it can float half submerged?
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