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an object of mass 14.5kg is hung from a spring scale. the scale reads 14.5 N...

an object of mass 14.5kg is hung from a spring scale. the scale reads 14.5 N when the object is completely submerged in water. What is the density of the object

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Answer #1

Let the volume of the object be .

The weight of the object is

When submerged, the spring balance reads . Therefore, it has displaced a volume of water that has weight equal to the difference between its actual weight and spring balance reading. This volume is equal to the volume of the object as it is fully submerged.

Solving for , we get

Therefore, the density of the object is

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