| Author: abhi | Member Level: Bronze | Revenue Score:  |
When an object is placed in a fluid, the fluid exerts an upward force we call the buoyant force. The buoyant force comes from the pressure exerted on the object by the fluid. Because the pressure increases as the depth increases, the pressure on the bottom of an object is always larger than the force on the top - hence the net upward force.
The buoyant force is present whether the object floats or sinks. Let's consider a floating object, but the analysis is basically the same for a submerged object.
We'll also consider a rectangular block, although a similar (more complicated) analysis leads to the same result for funny-shaped objects.
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| Author: santosh kumar | Member Level: Bronze | Revenue Score: |
Those substances which flows easily are called fluids.A fluid exerts pressure in all directions.When an object is placed in a liquid,the liquid exerts a upward force or upthrust which is called buoyancy.
Objects appear to be less heavy when submerged in water.Every liquid exerts an upthrust on the objects immersed in it.The tendancy to exert an upward force on an object by a liquid is called buoyancy.It is also called Upthrust.
It is the buoyant force which makes heavy objects feel lighter in water.
The pressure exerted by a liquid increases with depth and acts in all directions.
The maximum loss in weight of an object takes place when an object is fully immersed in a liquid.
Factors that affect buoyant force are as follows:-
(1)Volume of the object immersed in the liquid.
(2)Density of a liquid.
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