Factors Affecting the Buoyant Force
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Ans: The ability of a liquid to exert an upward force on an object placed in it there by making it float or rise is called buoyancy.
i) For example, when a cork is pushed down into water kept in a glass, the cork rises on its own and comes back to the surface. The reason is that the pressure pushes cork upwards to keep it beneath the surface of water, downward force need to be exerted. This shows that, when the cork is under water, despite its weight, there is some force which pushes it upwards. When it is under water, the upward push is a kind of force exerted by water. The downward force exerted counter acts this upward push of the water on the cork.
ii) The buoyancy can also be seen when we are swimming, we float on water. This is also due to the upward force exerted by water on our body.
iii) A man can lift a heavier stone more comfortably under water than he could in air. This is because of the upward force of the water reduces his effort.
In all the three cases, when the objects are in water they experience a lifting force within the water and this force is called up thrust.
The force of the up thrust is equal to the weight of liquid displaced by the body. This is also called as Archimedes principle.
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i) For example, when a cork is pushed down into water kept in a glass, the cork rises on its own and comes back to the surface. The reason is that the pressure pushes cork upwards to keep it beneath the surface of water, downward force need to be exerted. This shows that, when the cork is under water, despite its weight, there is some force which pushes it upwards. When it is under water, the upward push is a kind of force exerted by water. The downward force exerted counter acts this upward push of the water on the cork.
ii) The buoyancy can also be seen when we are swimming, we float on water. This is also due to the upward force exerted by water on our body.
iii) A man can lift a heavier stone more comfortably under water than he could in air. This is because of the upward force of the water reduces his effort.
In all the three cases, when the objects are in water they experience a lifting force within the water and this force is called up thrust.
The force of the up thrust is equal to the weight of liquid displaced by the body. This is also called as Archimedes principle.
Hope it Helps!!
Answered by
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The Key Factors Affecting Buoyancy Force
Density of the fluid. Density is always determined by the mass and size of an object. ...
Volume. Volume affects buoyancy force on two fronts; volume of the object submerged in the fluid or volume of the displaced liquid. ...
Acceleration due to gravity. ...
References.
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