Question: A steel cube 100 mm on a side weighs 80 N. We want to hold the cube in equilibrium under water by attaching a light

A steel cube 100 mm on a side weighs 80 N. We want to hold the cube in equilibrium under water by attaching a light foam buoy to it. If the foam weighs 470 N/m³, what is the minimum required volume of the buoy?

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