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This force acts upwards on objects suspended in water or air what is it?
Wiki User
∙ 14y ago
It is called buoyant force. It is calculated by determining the volume of water displaced by the object, which is the volume of the object under water.The weight of this quantity of water is the buoyant force.
It can also be calculated by knowing the depth of the object in the water, the pressure at that depth, and the area of the bottom of the object.
Buoyant Force = Pressure * depth
It can also be calculated by knowing the weight of the object. If an object is floating the water is supporting the object's weight. So the buoyant force = weight of object
Wiki User
∙ 14y ago
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Adhesion and cohesion together enable water molecules to move through narrow tubes against the force of gravity how?
This is called Capillary action.
What is responsible for the attraction between water molecules?
Water molecules are attracted to each other by 'cohesive force'. It is the force that holds a droplet of water together in a raindrop, or in a semi-spherical shape if dripped onto glass. Water is also affected by ' adhesive force' which causes the droplet on glass to adhere (stick ) to the glass as well. In a thin glass tube the adhesive force makes the water move upwards.
How is fluid used to lift heavy objects?
Water helps lift an objects via the buoyancy force. The buoyancy force is equal to the weight of water displaced by the volume of the submerged object. If this buoyancy force is equal to the weight of the object, the object will float in that position. If the object is completely submerged and the resulting buoyancy force is less than the weight of the object, it will continue to sink.
What is capillary action?
Capillary action is the ability of water to flow in narrow spaces without the help of, and in resistance, to external forces such as the gravitational force. When water is in a tube, it has dipole-dipole interactions with the glass. Since these attractions are strong, the water will flow upwards clinging to the wall of the tube until the adhesive force equals the gravity pulling on the mass of suspended water. Paper products are made from cellulose, a fiber found in plant material. Water soaks into a paper towel, in part because adhesive force helps draw the water into spaces around the paper fibers, kind of like capillary action but on the outside of the tube! The same phenomena is used in chromatography to separate the particles in a dye/ink.
How pressure affects things under water?
the upthurst force acts on submerged objects
Why an object underwater feels lighter than it is in air?
There is a force called upthrust coming from the water. this pushes objects upwards, making the resultant force lower, which means they seem to weigh less.
What is the term for the ability to float on water?
This would include the term "buoyancy", which is not limited to objects that float. An objects whose weight is less than the water displaced by it would float. But an object could become suspended below water by the upward force of bouyancy, which acts on all objects in liquid.
Why an object underwater feels lighter than when it is in air?
There is a force called upthrust coming from the water. this pushes objects upwards, making the resultant force lower, which means they seem to weigh less.
What is the force that opposes objects through water?
Friction with the water.
What is the upward force that water exerts on objects?
buoyancy is the upward force that water exerts on an object. :)
How are density and byonancy?
Buoyancy is a force is water that occurs in water in objects.
What is the force that pulls objects up in the water?
Objects in water or other fluids can be pushed up to the surface by buoyancy.
What force keeps objects from sinking in water?
Buoyant force.
Why does displacement matter for floating or sinking?
The weight of the water (or other liquid, or gas) displaced is equal to the force with which the water will push the object upwards.
Why does the moon pull the sea water upwards?
Gravity - liquid is fluid so it moves when a gravitational force pulls on it.
Why is there a high tide on the side of the earth closets to the moon?
Because the moons gravitational force pulls the water upwards.
What is the upward force of water or air that keeps an object afloat?
The upward force provided by water is called the buoyant force. Also known as the buoyancy force. Because of buoyant force, objects seem lighter in water.
