Question

What makes an object float or sink?​

Answer 1

fig. Float & sink

Answer:-

Density.

Principal :-

Archimedes Principal

Explanation :-

If the density of an object is more than the density of the liquid, then it sinks in the liquid.

"Archimedes' principle reasons this statement. This is because the buoyant force acting on the object is less than the weight of the object. If the density of the object is less than or equal to the density of the liquid, then it floats on the surface of the liquid. This is because the buoyant force acting on the object is equal to the weight of the object."

Rules :-

1. An object more dense than the fluid inwhich it is immersed will sink.

2. An object less dense than the fluid inwhich it is immersed will float.

3. An object havinga density equal to thedensity of the fluid in which it is immersed will neither sink nor float.

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Answer 2

Explanation:

• Whether an object will sink or float in a given liquid depends on the density of the object and of the liquid under consideration.
• If the density of the object is greater than that of the liquid, the object will sink, and if its density is less than that of the liquid, it will float.
• The pencil shavings and foam would float in water because their densities are less than that of water.
• The ball of cotton would also float initially because cotton as a lot of air spaces and air is lighter than water.
• It would sink after soaking up in water because the air in it was displaced by water.