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Do dense objects float or sink?

Updated: 8/10/2023
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11y ago

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This would depend on the units of density used, but I think you mean with a specific gravity of 1. Specific gravity is a way of expressing density relative to water. An object with a specific gravity of 2 is twice as dense as water, and so it will sink. An onject with a specific gravity of 0.5 has half the density of water and so it will float.

An object with a specific gravity of exactly 1 would neither float, nor sink. If you place it in a tank of water just below the surface, it will neither rise to the top nor sink to the bottom. It will stay right where you put it in the middle of the tank.

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14y ago
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12y ago

It will stay in the middle because density less than one floats and density more than one sinks if it is in fresh water. if it is in salt or muddy water, which have different densities than regular water, then you will have different results

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12y ago

Water has a density of 1.

Objects (solids) that have a density less than 1 float.

Objects (solids) that have a density greater than 1 sink.

Then you might ask why one can make a ship out of solid steel, and it will still float.

The answer lies in displacement.

If you put a 1 kilo block of wood in water, and 1 kilo chunk of steel in water. The block of wood will displace 1 kilo of water (1 liter). If the block is larger than 1 liter, then one liter of the block will be under water, and the rest will be above the water, thus only displacing 1 kg of water.

With the chunk of steel, it's total volume is less than one liter, so it is unable to displace 1 kg of water, and it will sink.

Now, with the steel ships. They are constructed in a form that the hull of the ship will displace more water than the weight of the ship, and thus they float, effectively having a density of less than 1 for the entire ship. :)

P.S.: The hull of the ship is constructed such that it encloses (tightly sealed) a huge volume of air thus decreasing its density (total wieght much less compared to the new volume) so that it can displace greater amount of water and keep people afloat over it. The moment the weight of the people would become more than the weight of the water displaced it will sink.

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12y ago

Density is a property (mass per unit volume), not an object. Objects with high densities tend to sink while less dense objects tend to float.

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11y ago

They float if they're less dense than the fluid you put them in.

They sink if they're more dense than the fluid you put them in.

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9y ago

sink when placed with less dense fluids

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Q: Do dense objects float or sink?
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Continue Learning about Physics

What is the difference between an objects that float and the objects thasink in water?

Objects that float in water are less dense than water; while objects that sink in water are more dense than water.


What objects to sink or float?

An object will float if it is less dense than the water (or other liquid). If it is denser than the water, it sinks.


How can you predict whether an object will sink or float?

The density of water is 1 g/cm cubed, and objects more dense that water will sink, while objects less dense than water will float. An object will sink if it weighs more than the water it pushes away, and an object will float if it weighs less than the water it pushes away. The Greek mathematician Archimedes discovered that the amount of water displaced by an object depends on the mass of that object. Mass is the amount of matter in a substance, and dense objects have more mass than less dense objects. Dense objects that do not displace much water will sink, while less dense objects that displace a lot of water will float.


How can you predict if something will sink or float?

An object will sink if it weighs more than the water it pushes away, and an object will float if it weighs less than the water it pushes away. The Greek mathematician Archimedes discovered that the amount of water displaced by an object depends on the mass of that object. Mass is the amount of matter in a substance, and dense objects have more mass than less dense objects. Dense objects that do not displace much water will sink, while less dense objects that displace a lot of water will float.


What are objects will sink and what objects float?

it will float

Related questions

What is the difference between an objects that float and the objects thasink in water?

Objects that float in water are less dense than water; while objects that sink in water are more dense than water.


What can you infer about objeacts that sink or float in water?

Objects that Float in water are less dense than water. Objects that sink are more dense than water. More clearly stated Objects that sink displace less water than their weight of equal measure.


What objects float in water?

objects that are less dense float to the top.


How can you predict whether objects will float or sink?

The density of water is 1 g/cm cubed, and objects more dense that water will sink, while objects less dense than water will float. An object will sink if it weighs more than the water it pushes away, and an object will float if it weighs less than the water it pushes away. The Greek mathematician Archimedes discovered that the amount of water displaced by an object depends on the mass of that object. Mass is the amount of matter in a substance, and dense objects have more mass than less dense objects. Dense objects that do not displace much water will sink, while less dense objects that displace a lot of water will float.


What two things help in determining if an object will float of sink?

You can tell if objects will float or sink byHow buoyant the object isHow dense the object is


What objects to sink or float?

An object will float if it is less dense than the water (or other liquid). If it is denser than the water, it sinks.


How can you predict whether an object will sink or float?

The density of water is 1 g/cm cubed, and objects more dense that water will sink, while objects less dense than water will float. An object will sink if it weighs more than the water it pushes away, and an object will float if it weighs less than the water it pushes away. The Greek mathematician Archimedes discovered that the amount of water displaced by an object depends on the mass of that object. Mass is the amount of matter in a substance, and dense objects have more mass than less dense objects. Dense objects that do not displace much water will sink, while less dense objects that displace a lot of water will float.


How can you determine whether a solid object is more dense or less dense?

Gauge its buoyancy. Put it in the water. objects that are less dense will float while objects that are more dense sink.


How can you determine whether a solid is less or more dense than water?

Gauge its buoyancy. Put it in the water. objects that are less dense will float while objects that are more dense sink.


How can you predict if something will sink or float?

An object will sink if it weighs more than the water it pushes away, and an object will float if it weighs less than the water it pushes away. The Greek mathematician Archimedes discovered that the amount of water displaced by an object depends on the mass of that object. Mass is the amount of matter in a substance, and dense objects have more mass than less dense objects. Dense objects that do not displace much water will sink, while less dense objects that displace a lot of water will float.


What are objects will sink and what objects float?

it will float


Why do some objects float when placed in a container filled with a liquid while other sink?

It all depends on the density of the object. If an object was less dense than water, then it will float. If an object is more dense than water, then it will sink.