The density of an object compared to the density of a liquid determines its buoyancy. If the object’s density is less than the liquid’s, it floats. If the object’s density is greater, it sinks.
How does the density of an object determine whether it will float or sink in a liquid?
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The density of an object determines its buoyancy in a liquid. If the object’s density is less than the liquid’s density, it floats because the buoyant force exerted by the liquid is greater than the weight of the object. If the densities are equal or the object’s density is greater, it sinks.