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Celluhh
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I know that for something to float on water it has to displace an amount of water equal to its weight or more than that . But why is this so ?
The weight of water displaced will equal the weight of the floating object.Celluhh said:I know that for something to float on water it has to displace an amount of water equal to its weight or more than that .
Are you familiar with Archimedes' principle? The upward buoyant force on an object due to the pressure of the water equals the weight of the displaced water. If it's floating, the net force on it must be zero, so the upward buoyant force must balance the downward weight of the object.But why is this so ?
I don't quite understand that statement. A light object will displace a small volume of water (compared to the volume of the object), but that's all that's needed for it to float.Celluhh said:There was one website that said if a light object displaces a large amount of water in relation to its weight , it will float .
You need to know a little bit about forces, since floating and Archimedes' principle involves the force of gravity (weight) and the buoyant force.Yes I do know what it is but I have not learned about forces yet . Does this mean I have to have a basic understanding of forces to understand Archimedes principle ?
Sounds like you've got it. Let me restate it:Celluhh said:Ok so basically the first experiment is trying to tell
Me that as long as two objects have the same volume they will experience the Same amount f pressure and as since there is same amount of pressure it means that the buoyant force up against the water ball is the same as the buoyant force up against the actual ball of the same volume and hence when the same volume ball replaces the water ball it will experience ye same internal pressure but ends up displaces an amount of water which is of the same volume as it is . Did I understand it correctly ?
Celluhh said:I know that for something to float on water it has to displace an amount of water equal to its weight or more than that . But why is this so ?
Objects float or sink based on their density. Density is a measure of how much mass is in a certain volume of space. If an object is less dense than the fluid it is placed in, it will float. If it is more dense, it will sink.
The shape of an object does not directly affect its ability to float. However, the shape can indirectly affect its density. For example, a hollow object will be less dense than a solid object of the same size, and therefore more likely to float.
Like density, the buoyancy of an object is determined by the fluid it is placed in. Some liquids, like water, have a higher density than others, so objects that are less dense than water may float in one liquid but sink in another.
No, objects cannot float in a vacuum because there is no surrounding fluid to provide buoyancy. In a vacuum, objects will either remain stationary or move in a straight line due to the absence of any external forces.
This is due to the principle of buoyancy, which states that the upward force on an object in a fluid is equal to the weight of the fluid that the object displaces. Objects that are more dense than the fluid will sink, while those that are less dense will float at the surface.