How to find the volume of a parallelepiped?

An object weighs 84gwt in air and floats in water with only half its volume immersed. Find the volume of objec?

  • Find the volume and density of the object......also find whether it will float in a salt solution of relative density 1.2 ...and what will be the volume of the object now immersed in liquid as it floats

  • Answer:

    A floating object displaces an amount of water equal in weight/mass as the object. So 84g of water is half the object, so the object is half the density of water. The density needs to be greater than the water to sink, so it will still float in the salt water with a density of 1.2 of water. The volume immersed will be 1/1.2 of the half it had in water. Density of water is 1g/mL.

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