Question

why do objects float or sink when placed on surface of water?​

Answer 1

If the density of body is more than density of water, then the body will sink.

Otherwise if the density of body is less than or equal to the density of water, then the body will float.

Answer 2

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The density of an object determines whether it will float or sink in another substance.

An object will float if it is less dense than the liquid it is placed in.

An object will sink if it is more dense than the liquid it is placed in.

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