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It is because the buoyancy of water is greater than that of air.

In other words, the force pushing up on an object is equal to the weight of the same volume of whatever the object is in as the volume of the object. For example, a 1'x1'x1' cube submerged in pure water has an upward force on it of 62.4 pounds because the density of water is 62.4 pounds per cubic foot.

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Q: Why the weight of the objects are greater in the air than their weights in the water?
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Why do objects that float take out more water than objects that sink?

Objects that float displace more water than objects that sink because the buoyant force acting on the floating object is equal to the weight of the water displaced. This means the weight of the floating object is less than the weight of the water it displaces, causing it to rise and push out more water. Objects that sink do not displace as much water because their weight is greater than the weight of the water they could displace.


Two different objects are completely immersed in water and undergo same loss in weightis it necessary that the weights of these objects in air be also the same?

No, the weights of the two objects in air do not have to be the same even if they undergo the same loss in weight when immersed in water. The weight of an object in air depends on its mass and the gravitational force acting on it, whereas the loss in weight when immersed in water is due to the buoyant force exerted by the water, which is based on the volume of the object and the density of water.


Why do objects sink when placed in water?

Objects sink in water when their density is greater than the density of water. This means that the weight of the object is greater than the buoyant force exerted by the water, causing it to displace water as it sinks.


How and why do some things float and others sink?

Objects float when the weight of the water they displace is greater than their own weight, creating an upward buoyant force. Objects sink when their weight is greater than the buoyant force acting on them, causing them to descend in the water. The density and shape of an object determine whether it will float or sink.


Objects that float on water are what in water?

Objects that float on water are less dense than water, which allows them to displace enough water to support their weight and remain on the surface. This is due to the principle of buoyancy, where the upward force exerted by the water is greater than the downward force of the object's weight.


What happens when the water around objects have a force greater than the object's weight?

The water around floating object's is a measure of that object's "Displacement". For the object to float the weight of displacement must equal the object's weight. If the water around an object is of a greater weight than an object's displacement, then the object will sink.


What happends if the weight of an object is greather than the weight of the water?

I assume you mean "What happens if the weight of an object is greater than the weight of the water it displaces." If so, the answer is simple, it sinks. If an objects weighs less than the weight of the water it displaces, it floats.


How does density tell you if an object will float pure water?

If an object has a lower density than water, it will float. If an object has a higher density than water, it will sink. This is because objects will displace an amount of water equal to their own weight, and if the weight of the water displaced is greater than the weight of the object, the object will float.


Why do the objects float in water?

Objects float in water when the weight of the water displaced by the object is greater than the weight of the object itself. This creates an upward buoyant force that helps keep the object afloat. The density of the object and the density of the water are key factors that determine whether the object will sink or float.


How do they float on water?

Objects float on water when they displace an amount of water equal to their weight, creating an upward force called buoyancy that counteracts gravity. This buoyant force is greater than the weight of the object, allowing it to float. Objects like boats or ships are designed to displace enough water to keep them afloat.


What objects sink in the water?

Those objects that have a greater density than water will sink in the water. This comes from Archimedes' principle which states that a floating object displaces an amount of water equal to the weight of the object. If the object has a greater density than the water, then it would displace more water than is possible by its volume, so it sinks.


Do heavy objects float?

Heavy objects generally sink when placed in water because the density of the object is greater than that of water, causing it to displace less water and sink. For an object to float, it must displace an amount of water equal to its own weight.